JP3973108B2 - Method for producing low-calorie lactic acid bacteria beverage containing anthocyanin - Google Patents

Method for producing low-calorie lactic acid bacteria beverage containing anthocyanin Download PDF

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JP3973108B2
JP3973108B2 JP2005078405A JP2005078405A JP3973108B2 JP 3973108 B2 JP3973108 B2 JP 3973108B2 JP 2005078405 A JP2005078405 A JP 2005078405A JP 2005078405 A JP2005078405 A JP 2005078405A JP 3973108 B2 JP3973108 B2 JP 3973108B2
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lactic acid
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理一郎 大庭
義晴 佐々木
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Kumamoto Technology and Industry Foundation
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本発明は低カロリー甘味料マンニトールおよびアントシアニンを含有する乳酸菌飲料の製造方法に関する。更に詳しくは、本発明は、有色サツマイモを原料とし、ヘテロ型乳酸菌のマンニトール生産能を利用した乳酸菌飲料の製造方法に関する。   The present invention relates to a method for producing a lactic acid bacteria beverage containing a low-calorie sweetener mannitol and anthocyanin. More specifically, the present invention relates to a method for producing a lactic acid bacteria beverage using colored sweet potato as a raw material and utilizing the mannitol-producing ability of hetero-type lactic acid bacteria.

アントシアニンは赤色系植物に含まれており、機能性健康食品として様々な生理効果があることが知られている。アントシアニンには抗酸化能や抗変異原性など様々な生体調節機能性が報告されており、生体調節機能性が期待されている。例えば、活性酸素ラジカルを除去する作用、皮膚の老化防止剤としての働き、抗インフルエンザウイルス活性があることが報告されている。   Anthocyanins are contained in red plants and are known to have various physiological effects as functional health foods. Anthocyanins have various bioregulatory functionalities such as antioxidant ability and antimutagenicity, and are expected to have bioregulatory functionality. For example, it has been reported that it has an action of removing active oxygen radicals, a function as an anti-aging agent for skin, and an anti-influenza virus activity.

一方、乳酸菌による発酵食品は古くから食されている身近な食品であり、整腸作用を有する以外、コレステロール値や血圧を低下させる等の生体調節機能があること、更に発癌物質を排除する作用のあることが報告されている。しかし、市販の乳酸菌飲料には10%を越える濃度でグルコース等の糖類が含有されており、このことが、糖尿病患者、あるいはダイエットの努力をしている者には問題となっている。   On the other hand, fermented foods produced by lactic acid bacteria are familiar foods that have been eaten for a long time, and have a bioregulatory function such as lowering cholesterol levels and blood pressure in addition to having an intestinal regulating action, and also have the effect of eliminating carcinogens It has been reported. However, commercially available lactic acid bacteria beverages contain saccharides such as glucose at concentrations exceeding 10%, which is a problem for diabetics or those who are on a diet.

サツマイモを乳酸菌発酵食品の原料として用いる提案もいくつかなされている。例えば、特許文献1には、山川紫サツマイモ、脱脂粉乳、および砂糖を原料とし、それに乳酸菌スターターを配合して赤色をした乳酸菌飲料を製造する方法が開示されている。特許文献1に開示されている技術によれば、サツマイモに含まれるアントシアニンを出来るだけ分解しないで乳酸菌飲料に取り込むことに成功している。しかし、上記特許文献1の技術では、乳酸菌発酵に必要な糖原として砂糖が乳酸菌添加と同時に大量に配合されている。
特開平1−168259 特開平7−255375 特開2001−86929
Several proposals have been made to use sweet potato as a raw material for fermented foods of lactic acid bacteria. For example, Patent Document 1 discloses a method for producing a red lactic acid bacterium beverage by using Yamakawa purple sweet potato, skim milk powder, and sugar as raw materials and blending a lactic acid bacterium starter therein. According to the technique disclosed in Patent Document 1, anthocyanins contained in sweet potatoes have been successfully incorporated into lactic acid bacteria beverages without being decomposed as much as possible. However, in the technique of Patent Document 1, sugar is blended in a large amount simultaneously with the addition of lactic acid bacteria as a sugar source necessary for lactic acid bacteria fermentation.
JP-A-1-168259 JP-A-7-255375 JP 2001-86929 A

特許文献2には、黄色系植物色素を含む甘藷に乳原料を加え、これにラクトバシルス・ブルガリカス、及び/またはストレプトコッカス・サーモフィラスからなる乳酸菌を使用して発酵させ、乳酸発酵食品を製造する方法が開示されている。この特許文献2に開示された技術でも糖原は、乳原料とショ糖であり、サツマイモが糖原として使用されていない。   Patent Document 2 discloses a method for producing a lactic acid fermented food by adding a milk raw material to sweet potato containing a yellow plant pigment and fermenting it with a lactic acid bacterium comprising Lactobacillus bulgaricus and / or Streptococcus thermophilus. It is disclosed. Even in the technique disclosed in Patent Document 2, sugar sources are milk raw materials and sucrose, and no sweet potato is used as a sugar source.

特許文献3には、赤色系サツマイモ原料として山川紫およびベニハヤトを使用し、これにラクトバシルス・デルブルッキィ及びラクトバシルス・ヘルベティカスのいずれかまたは加えた乳酸菌を使用して乳酸発酵させて、サツマイモ乳酸発酵食品を製造している。この特許文献3に開示された技術でもサツマイモは糖原として使用されておらず、かつ、得られた乳酸発酵食品は糖質を16重量%程度含有することが示されている。   In Patent Document 3, Yamakawa Murasaki and Benihayato are used as raw materials for red sweet potato, and lactic acid fermentation is performed using lactic acid bacteria added to either Lactobacillus delbrukki and Lactobacillus helveticus to produce a sweet potato lactic acid fermented food. is doing. Even in the technique disclosed in Patent Document 3, sweet potato is not used as a sugar raw material, and the obtained lactic acid fermented food is shown to contain about 16% by weight of sugar.

本発明は、これまで有色サツマイモを利用したアントシアニンを含む乳酸菌飲料の製造方法における問題点を解決することを目的としている。本発明の第一の目的は、有色サツマイモを発酵用糖原料とし、従来の方法より簡便にかつアントシアニン含有量の高い乳酸菌飲料を製造する方法を提供することを目的としている。さらに本発明の第二の目的は、安価で低カロリー乳酸菌飲料を製造する方法を提供することを目的としている。   The object of the present invention is to solve the problems in the method for producing a lactic acid bacteria beverage containing anthocyanins using colored sweet potatoes. The first object of the present invention is to provide a method for producing a lactic acid bacterium beverage that uses colored sweet potato as a sugar raw material for fermentation and is simpler than conventional methods and has a high anthocyanin content. Furthermore, the second object of the present invention is to provide a method for producing an inexpensive and low calorie lactic acid bacteria beverage.

すなわち本発明は、有色サツマイモから糖化液Aを製造する工程(1)、工程(1)で製造された糖化液A、及び乳原料からなる発酵原料に、ラクトバシルス・ロイテリ(Lactobacillus reuteri)を加え、発酵させる工程(2)とからなるアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法である。 That is, in the present invention, Lactobacillus reuteri is added to the fermentation raw material consisting of the saccharified liquid A produced in the step (1), the step (1), and the dairy raw material. It is a manufacturing method of the low-calorie lactic-acid-bacteria fermented food containing the anthocyanin consisting of the process (2) made to ferment.

有色サツマイモは、アヤムラサキであることが好ましい。   The colored sweet potato is preferably Ayamurasaki.

有色サツマイモから糖化液Aを製造する工程(1)は、有色サツマイモに糖化酵素を配合し、反応させる工程を含むことが好ましい。   The step (1) of producing the saccharified solution A from the colored sweet potato preferably includes a step of mixing and reacting the saccharifying enzyme with the colored sweet potato.

工程(2)において、乳酸菌を加える方法は、糖、及び/又は乳原料と水との混合物に乳酸菌を植菌し、培養してなるスターターとして加える方法であることが好ましい。   In the step (2), the method of adding lactic acid bacteria is preferably a method of adding a lactic acid bacterium to a mixture of sugar and / or milk raw material and water and adding it as a starter.

前記工程(2)における発酵原料は、更にフルクトースを含むことが好ましい。 The fermentation raw material in the step (2) preferably further contains fructose.

有色サツマイモ乳酸菌飲料製造の際、味調整のため、ラクトバシルス・ヘルベティカス(Lactobacillus helveticus)、ラクトバシルス・アシドフィルス(Lactobacillus acidphilus)、及びラクトバシルス・デルブルーチキー・ブルガリカス(Lactobacillus delblueckii bulgaricus) からなる群から選ばれる1種以上の乳酸菌を工程(2)の発酵工程の途中で、更に添加することが好ましい。 Lactobacillus helveticus, Lactobacillus acidphilus, and Lactobacillus delblueckii bulgaricus are selected for taste adjustment when producing colored sweet potato lactic acid bacteria beverages It is preferable to further add one or more lactic acid bacteria during the fermentation process in step (2).

本発明の乳酸菌発酵食品は、ポリフェノール、特にアントシアニンを高濃度に含有し、高い抗酸化活性、脂質抗酸化性がある。また、乳酸菌発酵飲料本来の特性である整腸作用、抗癌効果もあると考えられる。従って、美容、健康増進、健康維持、老化防止、生活習慣病の予防、治療に役立つと考えられる。   The lactic acid bacteria fermented food of the present invention contains a high concentration of polyphenols, particularly anthocyanins, and has high antioxidant activity and lipid antioxidant properties. In addition, it is considered that there are also an intestinal regulating action and an anticancer effect which are the original characteristics of a lactic acid bacteria fermented beverage. Therefore, it is considered useful for beauty, health promotion, health maintenance, prevention of aging, prevention and treatment of lifestyle-related diseases.

本発明につき詳しく説明する。本発明の方法は、有色サツマイモから糖化液を製造する工程(1)と、工程(1)で製造された糖化液を含む発酵原料に、特定の乳酸菌を加え、発酵させる工程(2)とからなっている。   The present invention will be described in detail. The method of the present invention includes a step (1) for producing a saccharified solution from colored sweet potato, and a step (2) for adding a specific lactic acid bacterium to the fermentation raw material containing the saccharified solution produced in the step (1) for fermentation. It has become.

本発明では、原料として有色サツマイモを使用する。本発明における有色サツマイモとは、皮のみならず果肉までも有色のサツマイモで、九州の、特に鹿児島で多く栽培されている。このような有色サツマイモの品種としては、九州118号、九州121号、九州125号、九州128号、九系144号、九系182号等の黄色サツマイモ、九州119号、九系165号、九系174号、九系194号、九系195号、山川紫、ベニハヤト、種子島紫、アヤムラサキ等の赤色サツマイモ等がある。これらのうちでは、原料である粉末化物、あるいは摩砕物が手に入りやすく、アントシアニン含有量の多いアヤムラサキが好ましい。これらのサツマイモは粉末状か、すりこぎ等で摩砕された状態で使用される。   In the present invention, colored sweet potato is used as a raw material. The colored sweet potato in the present invention is a colored sweet potato not only for the skin but also for the flesh, and is cultivated in Kyushu, especially in Kagoshima. As such varieties of colored sweet potatoes, yellow sweet potatoes such as Kyushu 118, Kyushu 121, Kyushu 125, Kyushu 128, Nine Series 144, Nine Series 182, etc., Kyushu 119, Nine Series 165, Nine Series 174, Series 194, Series 195, Yamakawa purple, Benihayato, Tanegashima purple, Ayamurasaki and other red sweet potatoes. Of these, Ayamurasaki, which is easy to obtain a powdered product or a ground product as a raw material and has a high anthocyanin content, is preferable. These sweet potatoes are used in the form of powder or ground with a pestle or the like.

有色サツマイモを糖化することにより、サツマイモに含有されているデンプンから、乳酸菌発酵及びマンニトール生産に必要な一つの炭素源であるグルコースを製造する。   By saccharifying colored sweet potato, glucose which is one carbon source necessary for lactic acid bacteria fermentation and mannitol production is produced from starch contained in sweet potato.

本発明で用いる糖化剤としては、デンプンをオリゴ糖に加水分解するα−アミラーゼおよびデンプンもしくはオリゴ糖をグルコースに加水分解するグルコアミラーゼを逐次添加して用いることが好ましい。   As the saccharifying agent used in the present invention, α-amylase that hydrolyzes starch into oligosaccharides and glucoamylase that hydrolyzes starch or oligosaccharide into glucose are preferably added in succession.

本発明の工程(1)においては、まず市販の有色サツマイモ粉末化物、あるいは摩砕物に、水と糖化剤とを添加する。添加する方法は特別の装置を必要とせず、公知の、固体−液体混合装置、例えば翼付攪拌機を備えた反応容器、あるいはスターラー攪拌機を備えた反応容器等を用いることができる。   In step (1) of the present invention, water and a saccharifying agent are first added to a commercially available colored sweet potato powdered product or ground product. The addition method does not require a special apparatus, and a known solid-liquid mixing apparatus such as a reaction vessel equipped with a bladed stirrer or a reaction vessel equipped with a stirrer stirrer can be used.

工程(1)における水の添加はサツマイモ粉末化物、あるいは摩砕物と糖化剤との攪拌混合を容易にするためであり、サツマイモ粉末化物、あるいは摩砕物と水の割合は通常5〜20重量%、好ましくは10重量%である。   The addition of water in the step (1) is to facilitate the stirring and mixing of the sweet potato powdered product or the ground product with the saccharifying agent, and the ratio of the sweet potato powdered product or the ground product to the water is usually 5 to 20% by weight. Preferably it is 10 weight%.

工程(1)において、有色サツマイモ粉末化物、あるいは摩砕物、糖化剤、好ましくはα―アミラーゼ、および水とからなる混合物を60℃〜80℃の温度、好ましくは65℃〜75℃、特に好ましくは70℃の温度で1〜3時間、好ましくは2時間恒温恒室装置中に放置する。この工程により有色サツマイモ粉末化物、あるいは摩砕物のデンプンはオリゴ糖へと分解される。その後グルコアミラーゼを添加し、35℃〜65℃の温度、好ましくは50℃〜60℃で1〜5時間、好ましくは2時間恒温恒室装置中に放置する。その後必要に応じて濾過を行う。この工程によりグルコース含有有色サツマイモ粉末化物、あるいは摩砕物の糖化液が製造される。(以後糖化液Aという)。   In step (1), a colored sweet potato powdered product or a mixture of ground product, saccharifying agent, preferably α-amylase, and water is heated to 60 ° C to 80 ° C, preferably 65 ° C to 75 ° C, particularly preferably. It is left in a thermostatic chamber apparatus at a temperature of 70 ° C. for 1 to 3 hours, preferably 2 hours. By this step, the colored sweet potato powdered product or the ground starch is decomposed into oligosaccharides. Thereafter, glucoamylase is added and left in a thermostatic chamber at a temperature of 35 ° C. to 65 ° C., preferably 50 ° C. to 60 ° C. for 1 to 5 hours, preferably 2 hours. Thereafter, filtration is performed as necessary. By this step, a glucose-containing colored sweet potato powdered product or a saccharified solution of the ground product is produced. (Hereinafter referred to as saccharified solution A).

次に上記工程(1)で得た糖化液Aに、他の発酵原料と乳酸菌を加え発酵させる。(工程(2))   Next, other fermentation raw materials and lactic acid bacteria are added to the saccharified solution A obtained in the above step (1) and fermented. (Process (2))

本発明では、工程(2)の乳酸菌発酵で用いる乳酸菌として、ラクトバシルス属に属し、マンニトールを生産するヘテロ発酵型乳酸菌を用いる。このような乳酸菌としては、例えばラクトバシルス・ロイテリ(Lactobachirus reuteri)、ラクトバシルス・ブレビス(Lactobachirus brevis)、 ラクトバシルス・フェルメンタム(Lactobachirus fermentum)、ラクトバシルス・サンフランシセンシス(Lactobachirus sanfranciscensis),ラクトバシルス・インターメディウス(Lactobachirus intermedius)等を挙げることができる。これらの中ではアントシアニンを最も分解しないという点でラクトバシルス・ロイテリが最も好ましい。   In the present invention, a heterofermentative lactic acid bacterium belonging to the genus Lactobacillus and producing mannitol is used as the lactic acid bacterium used in the lactic acid bacterium fermentation in step (2). Examples of such lactic acid bacteria include Lactobachirus reuteri, Lactobachirus brevis, Lactobachirus fermentum, Lactobachirus sanfranciscensis, Lactobachirus sanfranciscensis, Etc. Among these, Lactobacillus reuteri is most preferable in that it does not decompose anthocyanin most.

工程(2)における乳酸菌の配合は、乳酸菌を発酵原料に直接配合してもよいが、好ましくは、予め糖、及び/または乳原料等の発酵原料中で乳酸菌を培養してなるスターターとして用いることが好ましい。スターター作製の際、乳酸菌に対する増殖促進物質として0.3〜0.7重量%の割合で酵母エキスを10重量%乳原料溶液に添加することが望ましい。スターターを調製する際の発酵温度は45℃以下、好ましくは30℃〜40℃、時間は10〜48時間、好ましくは18〜24時間の範囲である。   In the step (2), the lactic acid bacteria may be blended directly into the fermentation raw material, but preferably used as a starter obtained by culturing the lactic acid bacteria in advance in a fermentation raw material such as sugar and / or milk raw material. Is preferred. In preparing the starter, it is desirable to add yeast extract to the 10% by weight milk raw material solution at a rate of 0.3 to 0.7% by weight as a growth promoting substance for lactic acid bacteria. The fermentation temperature for preparing the starter is 45 ° C. or lower, preferably 30 ° C. to 40 ° C., and the time is 10 to 48 hours, preferably 18 to 24 hours.

本発明の乳酸菌発酵食品の製造方法においては、発酵原料の一部として乳原料用いる。このような乳原料としては、牛乳、水牛乳、ヤギ乳、ヤク乳、馬乳等を用いることができる。これらの乳原料は生乳としてのみならず、脱脂粉乳として用いることが出来る。   In the method for producing a lactic acid bacteria fermented food according to the present invention, a milk raw material is used as a part of the fermentation raw material. As such milk raw material, milk, buffalo milk, goat milk, yak milk, horse milk and the like can be used. These milk raw materials can be used not only as raw milk but also as skim milk powder.

本発明の乳酸発酵食品は有色サツマイモと、必要に応じて配合する乳原料とを主成分とするが、更に必要に応じて、他の成分、例えば、りんご、ぶどう、いちご、ブルーベリー等の他の果汁、例えば、トマト、ニンジン、セロリ、キュウリ等の野菜汁、マンノース、果糖、葡萄糖、糖蜜、砂糖、乳糖、ぶどう糖、麦芽糖、デキストリン等の糖類、酵母エキス、塩化ナトリウム、塩化カリウム、硫酸ナトリウム、硫酸鉄等の無機金属塩を本発明の目的を損なわない範囲で添加してもよい。   The lactic acid fermented food of the present invention is mainly composed of colored sweet potatoes and a milk raw material to be blended as necessary, but if necessary, other ingredients such as apples, grapes, strawberries, blueberries, etc. Fruit juice, for example, vegetable juice such as tomato, carrot, celery, cucumber, mannose, fructose, sucrose, molasses, sugar, lactose, glucose, maltose, dextrin and other sugars, yeast extract, sodium chloride, potassium chloride, sodium sulfate, sulfuric acid You may add inorganic metal salts, such as iron, in the range which does not impair the objective of this invention.

本発明の製造方法においては、工程(1)で得られた糖化液Aのグルコース量に対し2倍〜4倍量のフルクトースを添加することが好ましい。フルクトースの添加量は、グルコース量10 g/lに対しフルクトース20〜30g/lの範囲とすることが特に好ましい。   In the production method of the present invention, it is preferable to add 2 to 4 times the amount of fructose with respect to the amount of glucose in the saccharified solution A obtained in step (1). The amount of fructose added is particularly preferably in the range of 20-30 g / l of fructose per 10 g / l of glucose.

工程(2)においては、更に発酵原料液100重量%に対して、酵母エキスを0.3〜0.7重量%の割合で添加すると本発明の発酵工程、あるいはスターターの製造工程で乳酸菌の増殖が早くなり、発酵が迅速に進むため好ましい。   In the step (2), when yeast extract is further added in a proportion of 0.3 to 0.7% by weight with respect to 100% by weight of the fermentation raw material liquid, the growth of lactic acid bacteria in the fermentation process of the present invention or the starter manufacturing process. Is preferred because the fermentation process proceeds quickly.

上記混合液に上述の方法で作製したスターターを添加し、発酵を行う。発酵温度は45℃以下、好ましくは30℃〜40℃、時間は10〜48時間、好ましくは24〜48時間の範囲である。発酵中マンニトール生産を促進させるため、ゆるやかな攪拌培養が好ましい。   The starter produced by the above-mentioned method is added to the mixed solution to perform fermentation. The fermentation temperature is 45 ° C. or less, preferably 30 ° C. to 40 ° C., and the time is 10 to 48 hours, preferably 24 to 48 hours. Gentle stirring culture is preferred to promote mannitol production during fermentation.

有色サツマイモ乳酸菌飲料製造の際、酸味を付ける等の味調整ため有色サツマイモの色調を損なわないラクトバシルス・ヘルベティカス(Lactobachirus helveticus)、ラクトバシルス・アシドフィルス(Lactobachirus acidphilus)、ラクトバシルス・デルブルーチキー・ブルガリカス(Lactobachirus delblueckii bulgaricus)等のマンニトールを生産しない乳酸菌を工程(2)の発酵工程の途中で添加してもかまわない。しかし、その添加は、マンニトールを生産する乳酸菌によりマンニトールが十分生産された後に加える必要がある。   Lactobachirus helveticus, Lactobachirus acidphilus, Lactobachirus delbruchiki bulgaricus (Lactobachirus) which does not impair the color of the colored sweet potato to adjust the taste such as adding acidity during the production of colored sweet potato lactic acid bacteria beverages A lactic acid bacterium that does not produce mannitol, such as delblueckii bulgaricus, may be added during the fermentation step of step (2). However, the addition must be performed after mannitol is sufficiently produced by the lactic acid bacteria producing mannitol.

以上の方法により、マンニトールを含有し、グルコースやフルクトースをほとんど含有しないため低カロリーでかつアントシアニンを豊富に含む乳酸菌発酵食品が製造できる。   By the above method, fermented foods of lactic acid bacteria that contain mannitol and hardly contain glucose or fructose and are low in calories and rich in anthocyanins can be produced.

次に実施例を挙げて本発明につき更に詳しく説明するが、本発明はその要旨を超えない限りこれらの実施例になんら制約されない。   EXAMPLES Next, although an Example is given and this invention is demonstrated in more detail, this invention is not restrict | limited at all to these Examples, unless the summary is exceeded.

(実施例1)
《工程(1)》
アヤムラサキ粉末化物、あるいは摩砕物10 g、α−アミラーゼ30 mgに総量100 mlになるよう水を添加し、ゆるやかに攪拌しつつ、70℃で2時間反応させた。その後温度を55℃に下げ、グルコアミラーゼを30 mg添加しさらに2時間反応させ、糖化液を得た。この糖化液中には、2 g/100 mlのグルコースと、0.65 g/100 mlのフルクトースが含まれていた。
Example 1
<< Process (1) >>
Water was added to a powder of Ayamurasaki or 10 g of milled product and 30 mg of α-amylase to a total amount of 100 ml, and the mixture was reacted at 70 ° C. for 2 hours with gentle stirring. Thereafter, the temperature was lowered to 55 ° C., 30 mg of glucoamylase was added, and the mixture was further reacted for 2 hours to obtain a saccharified solution. This saccharified solution contained 2 g / 100 ml of glucose and 0.65 g / 100 ml of fructose.

《スターターの調製》
乳原料10g、酵母エキス0.3gに総量100 mlになるよう水を添加し、121℃で10分間滅菌処理した。その後ラクトバシルス・ロイテリを植菌し、37℃で24時間培養し、スターターを得た。
<Preparation of starter>
Water was added to 10 g of milk material and 0.3 g of yeast extract so that the total amount was 100 ml, and sterilized at 121 ° C. for 10 minutes. Thereafter, Lactobacillus reuteri was inoculated and cultured at 37 ° C. for 24 hours to obtain a starter.

《工程(2)》
脱脂粉乳7g、酵母エキス0.3g、フルクトース3.35g(グルコース:フルクトース濃度は1:2)に100 mlになるよう糖化液を加え、70℃で15分間殺菌処理した。その後ラクトバシルス・ロイテリのスターターを3ml植菌し、37℃で24時間発酵させ、さらにラクトバシルス・ヘルベティカスを3ml植菌し、37℃で24時間発酵させることにより目的の乳酸菌飲料を得た。
<< Step (2) >>
The saccharified solution was added to 7 g of skim milk powder, 0.3 g of yeast extract, and 3.35 g of fructose (glucose: fructose concentration is 1: 2) to 100 ml, and sterilized at 70 ° C. for 15 minutes. Thereafter, 3 ml of a starter of Lactobacillus reuteri was inoculated, fermented at 37 ° C. for 24 hours, further inoculated with 3 ml of Lactobacillus helveticus and fermented at 37 ° C. for 24 hours to obtain a target lactic acid bacteria beverage.

《糖類の分析》
得られた糖化液および乳酸菌飲料の糖濃度を、HPLCで測定した。分析条件は以下の通り行った:カラム YMC-パックポリアミン &#1030;&#1030; 250×4.6 mmlD。移動相 アセトニトリル/水 (75/25)、流速1.0 ml/min、温度15&ordm;C、検出器RI、 32×10-6 RIU/FS。フルクトース、グルコース、マンニトールそしてラクトースを標準物質として用いた。
《Analysis of sugars》
The sugar concentration of the obtained saccharified solution and lactic acid bacteria beverage was measured by HPLC. Analytical conditions were as follows: Column YMC-packed polyamine &#1030;&#1030; 250 × 4.6 mmlD. Mobile phase Acetonitrile / water (75/25), flow rate 1.0 ml / min, temperature 15 &ordm; C, detector RI, 32 × 10 −6 RIU / FS. Fructose, glucose, mannitol and lactose were used as standards.

《菌体数の測定》
菌体数はBCP加プレートカウント寒天培地(日水製薬株式会社)を用いたコロニーカウント法により測定した。
<Measurement of the number of cells>
The number of cells was measured by a colony counting method using a BCP-added plate count agar medium (Nissui Pharmaceutical Co., Ltd.).

《アントシアニン成分量の測定》
アントシアニン含量の測定は、以下に述べる方法で行った。5mlの0.1% HCl含有メタノールを5mlの試料に添加し、4&ordm;Cで一晩抽出する。3500 rpmで5分間遠心分離後、その上清の530nmにおける吸収値を測定した。アントシアニン含量は標準物質としてシアニジンクロライドを使用し算出した。
<Measurement of anthocyanin content>
The anthocyanin content was measured by the method described below. Add 5 ml of 0.1% HCl in methanol to a 5 ml sample and extract overnight at 4 &ordm; C. After centrifugation at 3500 rpm for 5 minutes, the absorption value at 530 nm of the supernatant was measured. The anthocyanin content was calculated using cyanidin chloride as a standard substance.

《有機酸分析》
有機酸は以下の条件で測定した。カラム:YMC-パック ODS-AQ-304(300X4.6mm)、検出波長:220nm、移動相:20mM H3PO4-NaH2PO4(PH
2.8)、流速:1.0 ml/min、温度:15&ordm;Cとした。乳酸、酢酸を標準物質として使用した。
《Organic acid analysis》
The organic acid was measured under the following conditions. Column: YMC-pack ODS-AQ-304 (300 × 4.6 mm), detection wavelength: 220 nm, mobile phase: 20 mM H 3 PO 4 —NaH 2 PO 4 (PH
2.8), flow rate: 1.0 ml / min, temperature: 15 &ordm; C. Lactic acid and acetic acid were used as standard substances.

工程(1)における実施例での糖濃度の測定結果を表1に示す。   Table 1 shows the measurement results of the sugar concentration in the example in the step (1).

工程(2)において得られた有色サツマイモ乳酸菌飲料の成分分析を表2に示す。   Table 2 shows the component analysis of the colored sweet potato lactic acid bacteria beverage obtained in step (2).

(比較例1)
実施例1において、ラクトバシルス・ロイテリの代わりにラクトバシルス・ヘルベティカスを用いる以外は、実施例1と同様に行なった。発酵工程前後における紫サツマイモ乳酸菌飲料の糖組成の変化を、表3に示す。
(Comparative Example 1)
In Example 1, it carried out like Example 1 except using Lactobacillus helveticus instead of Lactobacillus reuteri. Table 3 shows changes in the sugar composition of the purple sweet potato lactic acid bacteria beverage before and after the fermentation process.

(比較例2)
工程(1)の糖化工程を行わない以外は、実施例と同様に行ない、発酵原料の発酵工程前後における糖成分を分析した。結果を表4に示す。
(Comparative Example 2)
Except not performing the saccharification process of process (1), it carried out similarly to the Example and analyzed the sugar component before and behind the fermentation process of a fermentation raw material. The results are shown in Table 4.

本発明の方法で製造された有色サツマイモを原料とする乳酸菌発酵食品は、そのまま、あるいは更に寒天、果実等を配合した食品、あるいは他の食品の調味材料として使用することができる。   The lactic acid bacteria fermented food made from the colored sweet potato produced by the method of the present invention can be used as it is, as a food containing further agar, fruit or the like, or as a seasoning material for other foods.

Claims (6)

有色サツマイモから糖化液Aを製造する工程(1)、工程(1)で製造された糖化液A、及び乳原料からなる発酵原料にラクトバシルス・ロイテリ(Lactobacillus reuteri)を加え、発酵させる工程(2)とからなるアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法。 Step (1) for producing saccharified solution A from colored sweet potato, step (2) for adding Lactobacillus reuteri to fermentation material comprising saccharified solution A produced in step (1) and milk material, and fermentation (2) The manufacturing method of the low-calorie lactic-acid-bacteria fermented food containing the anthocyanin which consists of these. 有色サツマイモが、アヤムラサキであることを特徴とする請求項1に記載のアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法。
The method for producing a low-calorie lactic acid bacteria fermented food containing anthocyanins according to claim 1, wherein the colored sweet potato is Ayamurasaki.
有色サツマイモから糖化液Aを製造する工程(1)が、有色サツマイモに糖化酵素を配合し、反応させる工程を含むことを特徴とする請求項1〜2に記載のアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法。   The process (1) for producing a saccharified solution A from colored sweet potato includes a step of blending and reacting a saccharifying enzyme with colored sweet potato, and the low-calorie lactic acid bacterium fermentation containing anthocyanins according to claim 1 or 2 A method for producing food. 工程(2)において乳酸菌を加える方法が、糖、及び/又は乳原料と水との混合物に乳酸菌を植菌し、培養してなるスターターとして加える方法であることを特徴とする請求項1〜3に記載のアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法。   The method of adding a lactic acid bacterium in the step (2) is a method of adding a lactic acid bacterium to a mixture of sugar and / or a milk raw material and water and adding it as a starter. The manufacturing method of the low-calorie lactic-acid-bacteria fermented food containing the anthocyanin of description. 工程(2)における発酵原料が、更にフルクトースを含むことを特徴とする請求
項1〜4に記載のアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法。
The method for producing a low-calorie lactic acid bacteria fermented food containing anthocyanins according to claim 1, wherein the fermentation raw material in step (2) further contains fructose.
有色サツマイモ乳酸菌飲料製造の際、味調整のため、ラクトバシルス・ヘルベティカ
ス(Lactobacillus helveticus)、ラクトバシルス・アシドフィルス(Lactobacillus
acidphilus)、及びラクトバシルス・デルブルーチキー・ブルガリカス(Lactobacillus delblueckii bulgaricus)からなる群から選ばれる1種以上の乳酸菌を工程(2)の発酵工程の途中で、更に添加することを特徴とする請求項1〜5に記載のアントシアニンを含有する低カロリー乳酸菌発酵食品の製造方法。
Lactobacillus helveticus (Lactobacillus helveticus), Lactobacillus acidophilus (Lactobacillus Lactobacillus) for the taste adjustment during the production of colored sweet potato lactic acid bacteria beverages
acidphilus) and at least one lactic acid bacterium selected from the group consisting of Lactobacillus delblueckii bulgaricus is added during the fermentation step of step (2). The manufacturing method of the low-calorie lactic-acid-bacteria fermented food containing the anthocyanin of claim | item 1 -5.
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WO2009008143A1 (en) * 2007-07-06 2009-01-15 Nihon Kefir Co., Ltd. Method for production of plant-derived kefir from starch-containing plant-derived material, and plant-derived kefir produced by the method
JP5021442B2 (en) * 2007-12-13 2012-09-05 サントリーホールディングス株式会社 Vegetable drink with improved taste
JP6076531B1 (en) * 2016-04-25 2017-02-08 合同酒精株式会社 Beverage or alcoholic beverage
CN106262829A (en) * 2016-08-15 2017-01-04 王东平 A kind of nutritious compound lactic acid bacteria tablet and its preparation method and application
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101990951A (en) * 2010-09-19 2011-03-30 内蒙古伊利实业集团股份有限公司 Antioxidant milk product and preparation method thereof
CN101990951B (en) * 2010-09-19 2012-09-05 内蒙古伊利实业集团股份有限公司 Antioxidant milk product and preparation method thereof

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