JP2008193964A - Method for producing packaged coffee beverage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaged coffee beverage suppressed in generation of hydroxyhydroquinone due to heat sterilization, causing no generation of hydrogen peroxide in the body after drunk, and having good flavor. <P>SOLUTION: The method for producing a packaged coffee beverage comprises setting a heating temperature of a retort sterilization machine to be at 125-140 °C, and an average warm-up rate ranging from a preheating temperature to the heating temperature to be at 6-10 °C/min. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for producing a containerized coffee beverage in which the production of hydroxyhydroquinone by heat sterilization is suppressed.

  Hydrogen peroxide, one of the active oxygens, is not only mutagenic, carcinogenic, etc., but also has many cardiovascular diseases such as arteriosclerosis and ischemic heart disease, digestive system diseases, allergic diseases, eye diseases, etc. It is said to be deeply involved in the disease (Non-patent Document 1). On the other hand, coffee has the action of generating hydrogen peroxide in vivo in hydroxyhydroquinone contained in the coffee, and the content of hydroxyhydroquinone is sufficiently smaller than the amount normally contained (0 to 0.00005). It is reported that a coffee composition that does not increase the production of hydrogen peroxide in a living body can be obtained by controlling to (mass%) (Patent Document 1).

  On the other hand, heat sterilization is generally performed for container-packed coffee beverages. As a sterilization method, a retort sterilization method is generally used in which a beverage is filled and sealed in a container and then sterilized by heating at 100 ° C. or higher. However, there are problems such as flavor, deterioration of components, generation of precipitates and the like due to heat treatment.

For example, retort sterilization of a coffee beverage containing milk is normally performed at about 124 ° C. for about 20 minutes and under a sterilization condition of about 40 as a sterilization value (F ₀ value). To do. Further, even if the hydroxyhydroquinone content is reduced before sterilization, hydroxyhydroquinone tends to be regenerated in the heat sterilization treatment step, and a solution to this problem is required.

As a method of preventing flavor deterioration or precipitation due to heat treatment, there is a method of heat treatment in a short time at a high temperature. In Patent Document 2, as a manufacturing method for providing an excellent flavor / taste milk-containing beverage, heat treatment by a retort sterilizer is performed at a temperature of 1 to 5 ° C./min until the content temperature reaches at least 130 ° C. , A method of performing heat treatment at 130 to 140 ° C. for a maximum of 8 minutes is disclosed. However, although the production method using this sterilization method can provide a certain degree of hydroxyhydroquinone production inhibitory effect, it cannot be said to be sufficient.
Nutrition-Evaluation and Treatment 19,3 (2002) JP 2006-204191 A JP 2001-275632 A

  An object of the present invention is to provide a packaged coffee drink that suppresses the production of hydroxyhydroquinone by heat sterilization, does not produce hydrogen peroxide in the body after drinking, and has a good flavor.

  As a result of investigations to achieve the above object, it was found that by limiting the sterilization conditions, the flavor is good and the production of hydroxyhydroquinone in the coffee beverage can be suppressed.

  That is, the present invention is characterized in that the heat treatment temperature of the retort sterilizer is in the range of 125 ° C. to 140 ° C., and the average heating rate from the preheating temperature to the heat treatment temperature is 6 ° C./min to 10 ° C./min. It is a manufacturing method of the container-packed coffee drink.

  According to the present invention, it is possible to suppress the production of hydroxyhydroquinone by retort sterilization. Thereby, the container-packed coffee drink which does not produce | generate hydrogen peroxide in the living body after drinking can be obtained stably.

  In the present invention, roasted coffee beans are pulverized and milk or additives are appropriately added to a coffee extract extracted with hot water or the like to prepare a coffee beverage. The coffee beans were used in an amount of 1 g or more, preferably 2.5 g or more, more preferably 5 g or more of coffee beans per 100 g of beverage. In addition, sugars such as sucrose, glucose, fructose, xylose, fructose glucose solution, sugar alcohol, antioxidants, pH adjusters, fragrances and the like can be added. The pH of the coffee composition is preferably 5 to 7, more preferably 5.4 to 6.5, and particularly preferably 5.6 to 6.3 in terms of beverage stability, for example, for coffee with milk. Next, the container is filled with 100 ml to 1000 ml using a quantitative filling machine or the like. The container can be manufactured by filling a container such as a can (aluminum, steel), paper, or a retort pouch that can be sterilized by retort. The filling amount is preferably 150 to 350 mL, more preferably 180 to 250 mL from the viewpoint of ease of drinking.

  Next, in the retort sterilization of the present invention, a container filled with a coffee beverage is loaded into a retort sterilizer, and degassed in the retort sterilizer by maintaining at a constant temperature of 100 ° C. to 110 ° C. for a predetermined time as preheating. After the operation, the temperature is raised to a predetermined heating condition, and heat treatment is performed.

  The rate of temperature increase from room temperature to the preheating temperature, that is, 100 ° C. to 110 ° C., is 10 to 30 ° C./min, preferably 15 to 25 ° C./min. If it is 10 ° C./min or less, the retort operation time becomes long and the production efficiency is lowered, which is not preferable, and if it is 30 ° C./min or more, local heating occurs, it is not preferable.

  The preheating temperature is more preferably 105 to 110 ° C. from the viewpoint of deaeration operability. If the preheating temperature is higher than 110 ° C., the temperature increase range until the sterilization treatment is reduced, and the effect of suppressing the increase of hydroxyhydroquinone is reduced.

  The temperature rise from the preheating to the heat treatment is performed under the temperature raising conditions of 6 ° C./min to 10 ° C./min, preferably 7 ° C./min to 9 ° C./min.

  If the average heating rate is less than 6 ° C / min, the hydroxyhydroquinone production inhibitory effect is not sufficient, and if it exceeds 10 ° C / min, the temperature in the retort sterilizer becomes non-uniform and the temperature rise in the contents of the container is unstable. As a result, a stable sterilization value cannot be obtained.

  As a method for controlling the temperature increase rate, it is desirable to set a target value per unit time from the temperature increase rate and continuously control the heat treatment temperature while sequentially updating the target value.

  The temperature of the heat treatment can be performed in the range of 125 ° C to 140 ° C.

  From the standpoint of maintaining the flavor of a coffee beverage and obtaining a stable sterilization value, 130 ° C to 135 ° C is particularly preferable.

  If it is less than 125 ° C., the temperature range for raising the temperature from the preheating temperature to the heat treatment temperature is small, and the effect of suppressing the increase in hydroxyhydroquinone according to the present invention is small. From the viewpoints of durability and container durability.

As the holding time at the heat treatment temperature, for example, in the case of black coffee, when the F ₀ value is 20, 8 minutes or less, preferably 1 to 2 minutes is preferable from the viewpoint of flavor and component deterioration. For example, in the case of milk coffee, when the F ₀ value is 40, 16 minutes or less, preferably 1 to 5 minutes is preferable from the viewpoint of flavor and component deterioration.

  The temperature during the holding time at the heat treatment temperature of 125 ° C. to 140 ° C. may vary in the range of 125 ° C. to 140 ° C., but in order to stably obtain a predetermined sterilization value, the average during the holding time It is desirable to keep the temperature constant within a range of ± 0.5 ° C with respect to the temperature.

  As a method for maintaining the temperature, there is a method of maintaining the temperature within a certain range by providing a certain temperature range and opening and closing the steam valve. A more preferable method is a method of maintaining the temperature at a constant temperature more stably by continuously controlling the amount of steam using a control valve.

  After holding for a predetermined time at a heat treatment temperature in the range of 125 ° C. to 140 ° C. to achieve a predetermined sterilization value, forced cooling is performed to the predetermined temperature.

  The cooling rate is preferably from 0.5 minutes to 2 minutes, more preferably from 0.5 minutes to 1 minute, from the heat treatment temperature to 100 ° C. from the viewpoint of suppressing the increase in hydroxyhydroquinone. The cooling rate from 100 ° C. or lower is not limited, but is preferably as rapid as possible from the viewpoint of production efficiency.

  The cooling ultimate temperature is preferably 20 ° C. to 35 ° C. close to the storage temperature of the coffee beverage, and a water cooling method is used as the cooling method.

  The container-packed coffee beverage thus obtained has a good flavor while suppressing the production of hydroxyhydroquinone.

  In the production of coffee beverages, hydroxyhydroquinone is produced during roasting of coffee beans. Although it is possible to suppress the production of hydroxyhydroquinone by adjusting the roasting degree, the amount of hydroxyhydroquinone produced increases under the roasting conditions where a good coffee flavor can be obtained. In such a case, by making the hydroxyhydroquinone content in the coffee composition 0 to 0.00002 mass% before the heat treatment by the retort sterilizer of the present invention, the packaged coffee in which hydrogen peroxide is not generated in vivo. A beverage can be obtained.

  As a method for reducing the hydroxyhydroquinone content in the coffee composition before the heat treatment by the retort sterilizer, as a method for reducing the hydroxyhydroquinone in the coffee extract, the coffee extract is brought into contact with the porous adsorbent to obtain hydroxyhydroquinone. There are a method of adsorbing and removing, a method of decomposing by an enzyme, a method of extracting and removing by supercritical fluid, and the like. Examples of the method for reducing hydroxyhydroquinone in roasted beans include a method of aging roasted beans at 40 to 150 ° C., a method of bringing roasted beans into contact with an aqueous solvent, and the like. Among these methods, a method of adsorbing and removing hydroxyhydroquinone by bringing the coffee extract into contact with a porous adsorbent is preferable. Specifically, a method of removing hydroxyhydroquinone by adsorbing to a porous adsorbent can be mentioned.

  Porous adsorbents used for adsorption and removal of hydroxyhydroquinone include inorganic porous adsorbents such as activated carbon, silica, zeolite, alumina, clay (active clay, acid clay); cross-linked styrene, methacrylate ester, polyphenols Organic porous adsorbents such as

  A preferable porous adsorbent used in the present invention is a porous adsorbent whose pore radius is 0.7 nanometer (nm) or less and whose pore volume is 10% or more with respect to the entire pore capacity of the porous adsorbent. An adsorbent is mentioned. Furthermore, the volume of the pore having a pore radius of 0.7 nanometer or less, preferably 0.2 to 0.7 nanometer (nm) is 30% or more based on the total pore volume of the porous adsorbent, It is preferably 30 to 99%, more preferably 50 to 95%, particularly preferably 70 to 90%. Porous adsorbents with a pore radius of less than 0.7 nanometers (nm) and less than 10% of the total pore volume of the porous adsorbent have a low selectivity for hydroxyhydroquinone removal. Therefore, it is not preferable. Here, the pore radius and the capacity of the porous adsorbent are values measured by the MP method in the region where the pore radius is 1 nanometer (nm) or less, and in the region where the pore radius exceeds 1 nanometer (nm). Is a value measured by the KJH method, and whether the capacity of the pores having a pore radius of 0.7 nanometer (nm) or less is 10% with respect to the total pore capacity of the porous adsorbent. It can be determined from the pore distribution curves obtained by the MP method and the KJH method.

Total pore volume with pore radius of 1 nanometer (nm) or less by MP method: VM (cm ³ / g), Total pore volume with pore radius of more than 1 nanometer (nm) by KJH method: VK (cm ³ / g), pore volume with pore radius of 0.7 nanometer (nm) or less by MP method: V7 (cm ³ / g), pore volume with pore radius of 0.7 nanometer (nm) or less To the total pore volume of the porous adsorbent: V% = V7 / (VM + VK) × 100%
The MP method is a pore measurement method described in a literature (Colloid and Interface Science, 26, 46 (1968)), and the KJH method is a literature (J. Amer. Chem. Soc., 73.373 (1951)). The pore measuring method described in 1. Examples of the pore measuring device include BELSORP-mini and BELSORP-miniII (manufactured by Nippon Bell Co., Ltd.), which can be measured using a nitrogen adsorption method. In the nitrogen adsorption method, the sample after vacuum degassing at 120 ° C. is measured for pore distribution by a constant volume method using nitrogen gas.

  The porous adsorbent has an average pore radius in the micropore region of 0.5 nanometer (nm) or less, more preferably 0.2 to 0.5 nanometer (nm), particularly 0.3 to 0.00. It is preferably in the range of 5 nanometers (nm). Here, the micropore region indicates 1 nanometer (nm) or less, and the average pore radius is a value of the pore radius indicating the peak top of the pore distribution curve obtained by the MP method.

  As the types of porous adsorbents, the carbonaceous adsorbents described in Adsorption Technology Handbook-Process, Materials, and Design-(January 11, 1999, issued by NTS, Supervisor: Atsushi Takeuchi) Silica / alumina-based adsorbents, polymer adsorbents, chitosan resins, etc. can be used. From the viewpoint of leaving the coffee flavor, a carbonaceous adsorbent is preferred.

  As the carbonaceous adsorbent, powdered activated carbon, granular activated carbon and activated carbon fiber are preferable from the viewpoint of selective adsorption of hydroxyhydroquinone. Furthermore, activated carbon fiber is preferable because the flavor of the extract is good and the amount of chlorogenic acids recovered is large.

  As raw materials for powdered and granular activated carbon, there are sawdust, coal, coconut shell, etc., but coconut shell activated carbon derived from coconut shell is preferable, and activated carbon activated by gas such as water vapor is particularly preferable. As a commercially available product of such steam activated activated carbon, Shirakaba WH2C (Nippon Enviro Chemicals Co., Ltd.), Taiko CW (Nimura Chemical Co., Ltd.), Kuraray Coal GL (Kuraray Chemical Co., Ltd.) and the like can be used.

  Activated carbon fibers include polyacrylonitriles such as Fineguard (manufactured by Toho Rayon), pitches such as ador (manufactured by Unitika), phenols such as krativ (manufactured by Kuraray), and K filters (manufactured by Toyobo). Such cellulose type, other phenol type, and cotton type.

  In addition, the shape of the porous adsorbent is not particularly limited. In addition to ordinary powder and granular materials, the adsorbent is kneaded into fibers, molded with each porous adsorbent, cellulose, nonwoven fabric, and binder. It may be molded.

  The particle size of the porous adsorbent is not particularly limited, but if it is too large, the contact area with the adsorbent becomes small and the adsorption speed becomes slow. From the above points, the average particle size is preferably 0.01 μm or more and 2 mm or less, more preferably 50 μm or more and 400 μm or less, and particularly preferably 50 μm or more and 200 μm or less.

Further, the pore volume by the MP method of the porous adsorbent is preferably from 0.5 cm ³ / g or more, further 0.5~2cm ³ / g, in particular 0.6~1cm ³ / g are preferred. In the case of a porous adsorbent of 0.5 cm ³ / g or more, the effect of reducing the hydroxyhydroquinone content is easily obtained.

  These porous adsorbents are preferably used after washing with an aqueous solvent. By washing with an aqueous solvent, the removal rate of hydroxyhydroquinone from the coffee extract by the porous adsorbent treatment is improved. Examples of the aqueous solvent used for washing include water, tap water, ion-exchanged water, pure water, ethanol aqueous solution, and saline. The temperature of the aqueous solution used is preferably 5 to 95 ° C, more preferably 15 to 90 ° C, and particularly preferably 40 to 85 ° C.

  The amount of the aqueous solvent used for washing is preferably 100 parts by mass or more, more preferably 200 to 2000 parts by mass, and particularly preferably 400 to 1000 parts by mass with respect to 100 parts by mass of the porous adsorbent. Examples of the washing means include a method of adding a porous adsorbent to an aqueous solvent and stirring for 1 minute to 2 hours, a method of introducing an aqueous solvent into a column packed with the porous adsorbent, and the like. When the washing is performed under pressure, it is preferable because the flavor is further improved. The pressure condition at the time of water washing is usually 0 to 1 MPa.

  The contact between the raw coffee extract and the porous adsorbent in the present invention is performed under a pressure condition of 0.01 MPa or more and 10 MPa or less. The pressure here means the pressure difference between the pressure inside the closed container and the pressure outside the container in the batch method, and the pressure difference between the pressure at the column outlet and the atmospheric pressure in the column method. By contacting under such pressure conditions, the hydroxyhydroquinone content in the coffee extract is efficiently reduced. Furthermore, even when the obtained coffee composition is heat sterilized when it is made into a packaged coffee or the like, it is possible to prevent the hydroxyhydroquinone from being regenerated. The pressing condition may be 0.01 MPa or more and 10 MPa or less, but 0.02 to 10 MPa, more preferably 0.05 to 5 MPa, and particularly preferably 0.1 to 1 MPa. For example, in the case of a batch method, such a pressure treatment is a method in which an inert gas or air is introduced into an airtight container with stirring to apply pressure. The method of applying pressure is mentioned.

  The amount of the porous adsorbent used is preferably 1% by mass or more and 200% by mass or less, and more preferably 10 to 200% by mass with respect to the soluble solid content of the raw coffee extract. The soluble solid content of the raw coffee extract can be measured using a digital differential densitometer DD-7, a digital refractometer RX-5000, a digital refractometer RX-5000α (Atago Co., Ltd.) and the like.

  Examples of the contact treatment means include a batch method and a column flow method.

  As a batch method, the porous adsorbent may be removed after adding the porous adsorbent to the liquid containing the coffee extract and stirring at −10 to 100 ° C. for 0.5 minutes to 5 hours. Examples of the atmosphere during the treatment include air and inert gas (nitrogen gas, argon gas, helium gas, carbon dioxide gas), but inert gas is preferred from the viewpoint of flavor.

  In the column passing method, a porous adsorbent is filled in an adsorption column, a liquid containing a coffee extract is passed from the lower or upper part of the column, and discharged from the other. The ratio L / D of the adsorbent filling height L and D (diameter) is usually preferably from 0.1 to 10. The amount of the porous adsorbent packed in the column may be an amount that can be packed in the adsorption column before passing the liquid. It is sufficient that at least one of the upper and lower stages of the adsorption column has a separation structure that has a mesh (net) or punching metal and does not substantially leak the porous adsorbent. The opening diameter of the separation structure may be smaller than the average particle diameter of the porous adsorbent, preferably an opening of 1/2 or less, particularly preferably 1/3 or less of the average particle diameter of the porous adsorbent. A specific opening diameter is 0.1 to 1000 μm. The adsorption treatment temperature of the liquid containing the coffee extract is preferably -10 ° C to 100 ° C, but more preferably 0 to 40 ° C from the viewpoint of flavor. The residence time (K / QC) of the liquid flow rate (QC [g / min]) containing the coffee extract with respect to the adsorbent amount (K [g]) in the adsorption column is 0.5 to 300 minutes.

  The coffee composition can remove adsorbent fine powder by a solid-liquid separation process. As a method for removing fine particles of the adsorbent, a method selected from one or more of a centrifugal separator, filter paper, zeta potential filter, filter press, and diatomaceous earth filtration can be selected. From the viewpoint of flavor and texture, it is usually preferable to remove fine powder of 1 μm or more, preferably 0.5 μm or more, particularly preferably 0.1 μm or more, by the solid-liquid separation step.

Example 1
The coffee beans were extracted with 8 times the amount of ion-exchanged water (95 ° C.) with respect to medium-roasted coffee beans. Next, Brix in the coffee extract was measured, and a column (inner diameter: 45 mm, length: 150 mm) filled with activated carbon (Shirakaba WH2C) in an amount of 50% by weight with respect to Brix was prepared. Thereafter, the coffee extract was passed through a column filled with activated carbon under the conditions of a temperature of 25 ° C. and SV8 [1 / capacity [m ³ ] / flow rate [m ³ / hr]] and treated with activated carbon to remove hydroxyhydroquinone. A coffee composition was obtained. This coffee composition was diluted with ion-exchanged water, and the pH was adjusted with sodium bicarbonate. The hydroxyhydroquinone of the coffee beverage before heat sterilization thus obtained was 0.000005% by mass (detection limit) or less (HPLC-analysis method of hydroxyhydroquinone with an electrochemical detector). Next, this coffee drink was filled and sealed in a 190 g can, and subjected to heat sterilization with a retort sterilizer under the sterilization conditions (temperature increase rate, sterilization temperature and sterilization time) shown in Table 1 to obtain a container-packed coffee drink. . Moreover, the hydroxyhydroquinone after heat sterilization used the analysis method of the hydroxyhydroquinone by a HPLC-electrochemical detector. For sensory evaluation, the overall coffee flavor, such as the aroma at the time of opening and the feeling of coffee when drinking, was evaluated in four stages, and the results are shown in Table 1.
Comparative Example 1
A packaged coffee beverage was produced in the same manner as in Example 1 except that the sterilization conditions (temperature increase rate, sterilization temperature, and sterilization time) shown in Table 1 were controlled.
Example 2
In the same manner as in Example 1, a coffee drink having a hydroxyhydroquinone content of 0.00001% by mass was produced, and a container-packed coffee drink was produced under the sterilization conditions (temperature rise rate, sterilization temperature, and sterilization time) shown in Table 1.
Comparative Example 2 and Example 3
A packaged coffee drink was produced in the same manner as in Example 2 except that the sterilization conditions (temperature increase rate, sterilization temperature, and sterilization time) shown in Table 1 were controlled.

As shown in Table 1, by setting the heat treatment temperature by the retort sterilizer in the range of 125 ° C. to 140 ° C. and the average temperature rising rate to the heat treatment temperature of 6 ° C./min to 10 ° C./min, It was found that the generation of is suppressed.
<HPLC—Method for Analyzing Hydroxyquinone with Electrochemical Detector>
A method for analyzing hydroxyhydroquinone in a packaged coffee beverage or coffee composition is as follows. The analytical instrument used was a Couloarray system (model 5600A, development / manufacturing: ESA, USA, import / sales: MC Medical Co., Ltd.) which is an HPLC-electrochemical detector (coulometric type). The names and model numbers of the constituent units of the apparatus are as follows.

  Analytical Cell: Model 5010, Couloarray Organizer, Couloarray Electronics Module / Software: Model 5600A, Solvent Delivery Module: Model 582, Gradient Mixer, Autosampler: Model 542, Pulse Damper, Degasser: Degasys Ultimate DU3003, Column Oven : 505. Column: CAPCELL PAK C18 AQ inner diameter 4.6 mm × length 250 mm particle diameter 5 μm (Shiseido Co., Ltd.).

  The analysis conditions are as follows.

  Sample injection volume: 10 μL, flow rate: 1.0 mL / min, applied voltage of electrochemical detector: 0 mV, column oven set temperature: 40 ° C., eluent A: 0.1 (W / V)% phosphoric acid, 0. 1 mM 1-hydroxyethane-1,1-diphosphonic acid, 5 (V / V)% methanol solution, eluent B: 0.1 (W / V)% phosphoric acid, 0.1 mM 1-hydroxyethane-1,1 -Diphosphonic acid, 50 (V / V)% methanol solution.

  Eluents A and B were prepared by using distilled water for high performance liquid chromatography (Kanto Chemical Co., Ltd.), methanol for high performance liquid chromatography (Kanto Chemical Co., Ltd.), phosphoric acid (special grade, Wako Pure Chemical Industries, Ltd.) )), 1-hydroxyethane-1,1-diphosphonic acid (60% aqueous solution, Tokyo Chemical Industry Co., Ltd.).

Concentration gradient condition Time Eluent A Eluent B
0.0 minutes 100% 0%
10.0 minutes 100% 0%
10.1 min 0% 100%
20.0 minutes 0% 100%
20.1 minutes 100% 0%
50.0 minutes 100% 0%
The analytical sample was prepared by accurately weighing 5 g of the sample, and then adding 0.5 (W / V)% phosphoric acid, 0.5 mM 1-hydroxyethane-1,1-diphosphonic acid, 5 (V / V)% methanol solution. The volume was made up to 10 mL, and this solution was centrifuged to obtain a supernatant. The supernatant was passed through Bond Elut SCX (solid phase filling amount: 500 mg, reservoir capacity: 3 mL, GL Sciences Inc.), and about 0.5 mL of the first passing solution was removed to obtain a passing solution. The passing liquid was filtered through a membrane filter (GL chromatodisc 25A, pore size 0.45 μm, GL Sciences Inc.) and immediately subjected to analysis.

  In the analysis under the above conditions of the HPLC-electrochemical detector, the retention time of hydroxyhydroquinone was 6.38 minutes. From the obtained peak area value, mass% was determined using hydroxyhydroquinone (Wako Pure Chemical Industries, Ltd.) as a standard substance.

Claims (3)

  A method for producing a packaged coffee beverage in which the heat treatment temperature of the retort sterilizer is in the range of 125 ° C to 140 ° C, and the average temperature rise rate from the preheating temperature to the heat treatment temperature is 6 ° C / min to 10 ° C / min.   The manufacturing method of the container-packed coffee drink of Claim 1 whose hydroxyhydroquinone content in the coffee composition before heat processing by a retort sterilizer is 0-0.00002 mass%.   The method for producing a containerized coffee beverage according to claim 1 or 2, wherein the coffee composition before the heat treatment by the retort sterilizer is obtained by bringing the coffee extract into contact with the porous adsorbent to reduce the hydroxyhydroquinone content.