CN1037638A - New bitter-eliminating technique of juice of oranges and tangerines - Google Patents

Abstract

New bitter-eliminating technique of juice of oranges and tangerines of the present invention, elite domestic resin hb801 is an adsorbent, adopt stirring reaction to handle or tower absorption method, can be extremely effectively slough citrus fruit each several part and other fruit and vegetable juice's bitter taste (contain subtract acid, remove astringent taste) to some extent according to people's requirement, technology is easy, and is with low cost, and effect is splendid, meet the food hygiene requirement, have very big economic benefit and social benefit.

Description

New bitter-eliminating technique of juice of oranges and tangerines

The present invention is efficient, a practical new technology of removing the citrus juice bitter taste.

The bitter taste of citrus fruit is made up of the first bitter substance aurantiin and the second bitter substance class citrin.When citrus fruit contains the hardship appropriateness, be useful for the local flavor that keeps citrus fruit juice.But, some citrus variety, bitter taste is too strong, particularly in system during juice, and the precursor compound of naturally occurring second bitter substance in the pulp, in the process of squeezing the juice, be transformed into the strong class citrin of bitter taste at leisure, therefore, when drinking fruit juice, bitter sense is even more serious when eating pulp raw, makes many consumers be difficult to acceptance.Certainly remove this bitter taste fully, just lost the distinctive local flavor of citrus fruit juice, the consumer can not welcome yet.So for many years, relevant industry is removed the partly method of bitter taste of citrus juice in research both at home and abroad always.At present, roughly can divide into add to press down bitter agent, enzyme processing, absorption method and gather before and after fruit handle four class methods.

The present invention is with the homemade nontoxic ion exchange resin cheapness that is adsorbent, efficient, practical up-to-date absorption debittering france.In the U.S., DMagnolato once adopted natural lignin for removing bitter adsorbent (United States Patent (USP), 4282264,1981), and the ion exchange resin of employing Amberlite XAD-7 is also arranged, and grapefruit juice was carried out the report of effective debitterize.People (1984) such as the preceding Tian Jiufu of Japan have studied 33 kinds of ion exchange resin and synthetic adsorbent carries out debitterize and subtracts acid-treated effect test orange juice, the result shows, de-bittering effect the best of synthetic adsorbent HP-20, S-861, XAD-7 and S-761, they are respectively 51%, 46%, 38% and 37% to the adsorption rate of aurantiin.Adsorbent XAD-4, XAD-7, HP-20, S-761, ES-771, S-861 and S-862 then have the good effect that removes to class citrin and Nomilin (Nomilin) etc.Also point out simultaneously, though the debitterize rate of XAD-7 is higher, can not be practical because of the amine stink is arranged.Can practical adsorbent be HP-20 and S-861.Also report in the foreign literature and can adsorb citrin (Limonin) with pearl cellogel post.In addition, polyamide and pyrrolidones resin also can be made the adsorbent of bitter substance.

One, the elite adsorbent-HB801 resin of the present invention

The citrus juice debitterize adsorbent that the present invention adopts is different fully with the domestic and foreign current use, be homemade HB801 type high molecular synthetic resin, have nontoxic, characteristics such as structure is excellent,, stable performance easy, color is light, use cost is cheap citrus juice bitter substance adsorptive selectivity height, regenerative operation.Be used for the processing of low alcohol white spirit at home, can have removed in the wine harmful lead ion, kept the effective ingredients such as acid, ester of former wine.It is as clear as crystal to handle the back low alcohol white spirit, and color is constant, and vinosity meets state health standards fully.Simultaneously, this adsorbent is handled with innoxious solvents such as edible alcohols before producing and using or during regeneration, can thoroughly remove the high polymer monomer of the delay that comprises in it, bring pollution can not for the processing object.

Two, debitterized technique

In the strong pending citrus juice of bitter taste or citrus peel juice, scum juice, liquid pectin, add 2～10% HB801 polymeric adsorbent, after stirring 2～15 minutes at normal temperatures, filter material with aperture＜0.3 millimeter filters, and the gained citrus juice does not then have hardship fully or leaves the needed appropriate bitter taste of people.

Perhaps, design a debitterize tower (also can be multi-tower structure), charges are HB801 in the tower, make debitterize object liquid such as citrus juice from import to outlet through the stream time, can be by different citrus variety bitter substance content and debitterize degree requirement design, the citrus juice that outlet is emitted etc. then can not have hardship fully or only leaves the needed appropriate bitter taste of people.

Example 1:

Experiment place: Inst. of Citrus, Zhejiang Academy of Sciences (north gate, Huangyan, Zhejiang county)

Get the strong citrus hybrid-Man tangerine * pomelo of bitter taste (name king's Man temporarily) fruit, squeeze the juice after the peeling, half of gained juice is with comparing, second half presses 10% heavy interpolation HB801 resin of juice, stir after 7 minutes, leach juice, for sense organ appraise and constituent analysis with white flannelette.

With the chopping of the pericarp that peels, clean, put into enamel pan after, the Shui ， And that adds 2 times of pericarp weight regulates its pH value to 3.0, boils back insulation 1 hour, leaches juice.Half of gained juice is with comparing, and second half adds the HB801 resin still by 10% of its weight, stirs after 10 minutes, leaches juice with white flannelette, for sense organ appraise and analysis of components.

The judge of participation sense organ appraise for being engaged in the citrus scientific research more than 20 years, does much research on tongue sense sensitivity more than 90 percent to the citrus fruit local flavor.Only judge at bitter taste during judge, that the bitter taste grade is divided into is extremely bitter (+++ ⒖ poh+), little hardship (+), do not have a hardship (0) substantially.Evaluation result sees Table 1.

Table 1.

Example 2:

Experiment place: Wenling, Zhejiang county cannery

Get the local citrus variety in the stronger Wenling of bitter taste-Gao orange fruit, produce high orange Normal juice and high orange peel liquid pectin by the method for example 1.And gets its half amount respectively and also carries out the debitterize processing by the method for example 1, and And is for on-the-spot sense organ appraise.

The factory director and the technical staff of the special office of Wenling county woods, the State Scientific and Technological Commission, the relevant scientific and technical personnel in foreign trade department and Wenling cannery thereof have participated in the operation of system juice and debitterize treatment process process.All judges all have more deep understanding to breediness and the bitter taste of Gao Cheng.The grade of passing judgment on bitter taste the results are shown in Table 2 with example 1.

Table 2.

Three, debitterize benefit and side effect

Be limited to the standard sample of domestication examination gaps in market aurantiin and class citrin, can't adopt high performance liquid chromatograph that bitter substance is carried out quantitative assay.But from the result of sense organ appraise, debitterizing method of the present invention, the debitterize rate can reach 71.8～96.3%, obviously is better than at present all debitterizing methods both at home and abroad.In addition, according to HB801 resin debitterize test initial budget estimates few in number, 1 kilogram of citrus juice of every processing only needs to increase cost and (does not contain the required expenses such as labour of debitterized technique) about one minute.Therefore, the present invention is reaching status leading in the world aspect economic benefit, debitterize rate, the practicality.

The same with all absorption debittering frances, the inventive method, excessive at the adsorbent consumption, under the long situation of reaction time, also exist the problem (seeing Table 3) that causes citrus juice nutrition that a small amount of loss is arranged, still, when onlying demand the part debitterize, regulate adsorbent addition and reaction time, just can make the loss of nutriment be reduced to Min..Go up toward going hardship totally toward the non-requirement of And owing to produce, therefore, the side effect of the inventive method can not influence the practicality of extensive use of the present invention.

Table 3 ^*

(analyzing 1988,4,14 by central laboratory of Inst. of Citrus, Zhejiang Academy of Sciences)

^*The elite polymeric adsorbent additional proportion of the present invention: 10%; Reaction time: 10 minutes; Handle the date: 1988,4,12.

The bitter taste that the present invention can be widely used in citrus juice, orange peel, scum juice and other Juice removes, and also can be used for the decolouring of liquid pectin.Press water when processing tangerine cake, preserved kumquat flattened is because of serious bitter taste causes low value.Can improve value greatly through PROCESS FOR TREATMENT of the present invention, capsule clothing slag, the seed discarded in the citrus processing industry also can be obtained through refining juice or seed-protein emulsion, and adopting debitterized technique of the present invention to handle turns waste into wealth.Formation of the present invention has been opened up the range of application of HB801 polymeric adsorbent, widely for having opened up approach in its market of going to the world.In a word, the present invention has tangible economic benefit and social benefit.

Claims (5)

1. The right that new bitter-eliminating technique of juice of oranges and tangerines of the present invention requires is as follows:

   1, the present invention is an adsorbent with the HB801 resin, adds in the debitterize object juice stirring reaction and handles, or be filled into that to implement the absorption debitterize when allowing debitterize object juice stream in the adsorption tower in tower be inventive features.
2. 2, carry out 1 described stirring reaction when handling, the ratio that the elite HB801 resin of the present invention adds debitterize object juice is 2～10%; The stirring reaction time is 2-15 minute; The edible aperture of filter material of separation resin is＜0.3 millimeter after disposing.
3. 3,1 described adsorption tower is charges with the elite HB801 resin of the present invention, and it is mixed that HB801 resin and any other edible sorbing material are pressed different proportion, also belongs to the scope of the invention to regulate debitterize object juice through stream time and other purpose.HB801 resin fill amount in the adsorption tower, tower diameter, orange juice flow velocity can be the scope of the invention by the height of different citrus variety bitter taste content and the requirement design of debitterize degree.
4. 4, temperature is not strict with during debitterize new technology implementation of the present invention, regulates temperature and all belong to the scope of the invention.
5. 5, the object juice used of debitterize of the present invention (contain subtract acid, remove astringent taste) new technology is full fruit press water, seed-protein emulsion and other fruit and vegetable juice etc. that various citrus juices, citrus peel juice, pulp scum juice, capsule clothing juice, liquid pectin, citrus (cumquat) tangerine cake add man-hour.