JP3579031B2 - Functional fermented milk product and method for producing the same - Google Patents

Functional fermented milk product and method for producing the same Download PDF

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JP3579031B2
JP3579031B2 JP2002012880A JP2002012880A JP3579031B2 JP 3579031 B2 JP3579031 B2 JP 3579031B2 JP 2002012880 A JP2002012880 A JP 2002012880A JP 2002012880 A JP2002012880 A JP 2002012880A JP 3579031 B2 JP3579031 B2 JP 3579031B2
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yogurt
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fermented milk
milk
gcl1001
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JP2003210105A (en
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悟 瀧澤
康雄 齋藤
康宏 濱中
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Glico Dairy Products Co Ltd
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Glico Dairy Products Co Ltd
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Description

【0001】
【発明が属する技術分野】
本発明はヨーグルト,乳酸菌飲料等の機能性発酵乳製品およびその製造方法に関する。
【0002】
【従来の技術及び発明が解決しようとする課題】
この種機能性発酵乳製品として,例えば整腸作用を有するとされるヨーグルトが市販されているが,整腸作用を付与するために使用される乳酸菌が有する,例えばビフィズス菌が産出する酢酸臭やアシドフィラス菌が産出するすえた臭いが製品に残ることによって製品の風味が損なわれる結果,機能性発酵乳製品が嫌われてその普及を阻害する要因ともなっている。
【0003】
本発明はかかる事情に鑑みてなされたもので,その解決課題とするところは,優れた整腸作用を備えるとともに嗜好性に富む機能性発酵乳製品及びその製造方法を提供するにある。
【0004】
【課題を解決するための手段】
上記課題に沿って鋭意研究した結果,例えば中央アジアの発酵乳から分離したラクトバチルス・ヘルベティカスに属する乳酸桿菌である,ラクトバチルス・ヘルベティカスGCL1001菌株(独立行政法人産業技術総合研究所特許生物寄託センター寄託番号FERM P−18654)を使用し,該菌株によって原料乳を発酵させるようにすると,該菌株が高度な整腸作用を呈するものとなるとともに上記特有の臭気が解消し,逆に発酵乳製品として好ましいさわやかな香り,換言するとさわやかな香り備えた嗜好性に富んだ香りを呈するものとなり,整腸作用と嗜好性を両立した機能性発酵乳製品とし得るとの知見を得た。
【0005】
本発明はかかる知見に基づいてなされたもので,請求項1に記載の発明を,乳酸桿菌であるラクトバチルス・ヘルベティカスGCL1001菌株(独立行政法人産業技術総合研究所特許生物寄託センター寄託番号FERM P−18654)を用いて原料乳を発酵させて整腸作用を付与したことを特徴とするヨーグルト,乳性乳酸菌飲料等の機能性発酵乳製品としたものである。
【0006】
また請求項2に記載の発明は,その製造方法を提供するように,これを,乳酸桿菌であるラクトバチルス・ヘルベティカスGCL1001菌株(独立行政法人産業技術総合研究所特許生物寄託センター寄託番号FERM P−18654)を用いて原料乳を発酵させて整腸作用を付与することを特徴とするヨーグルト,乳性乳酸菌飲料等の機能性発酵乳製品の製造方法としたものである。
【0007】
本発明において使用するラクトバチルス・ヘルベティカスGCL1001菌株は,独立行政法人産業技術総合研究所 特許生物寄託センターにFERM P−18654として寄託してあり,その分類学的性質は表1に示すとおりであり,また該菌株は,M. Venturaらが報告(M. Ventura, M.L. Callegari, L. Morelli, FEMS Microbiol. Lett., 189 275−279(2000))したラクトバチルス・ヘルベティカスの特異的プライマーを用いたPCRにより,表2に示す塩基配列を含むDNA断片を増幅させることによって他の菌株と識別することが可能である。
【0008】
【表1】

Figure 0003579031
【0009】
【表2】
Figure 0003579031
【0010】
本発明の機能性発酵乳製品は,例えばヨーグルト,乳酸菌飲料等の各種の製品とすることができ,その原料乳は,乳成分の無脂乳固形分が必須であるが,その基質を特に問わず,例えば牛乳等の獣乳,その脱脂乳等とし,必要に応じて乳脂肪分,砂糖,果実,ゲル化剤,香料等を添加し又は強化するようにすればよい。
【0011】
原料乳の発酵は,常法に従って配合,殺菌した原料乳(発酵基質)に上記ラクトバチルス・ヘルベティカスGCL1001菌株のスターターを植菌し,発酵温度を,例えば30〜45℃程度,望ましくは38〜45℃程度とし,発酵時間を,例えば2〜10時間程度,望ましくは4〜6時間程度として,これを行なうようにすればよい。
【0012】
ラクトバチルス・ヘルベティカスGCL1001菌株を用いた発酵乳製品は,該菌株が人工胃液,腸液に強い耐性を示し,整腸作用を呈するものとなし得る一方,嗜好性を増進するさわやかな香りを備えたものとなり,整腸作用と嗜好性を両立した機能性発酵乳製品とすることができる。なお発明者らの実験によれば,該菌株の人工胃液に対する耐性は,3時間経過後においても減少せず,人工腸液に対する耐性は,12時間経過後約5割という強い結果を示すものであった。また整腸作用は,例えばヨーグルトの健常成人の摂取量を1日に100g以下,例えば80〜90gとすることによってその効果を発揮し得るものとなる。
【0013】
【実施例】
以下本発明を実施例によって更に具体的に説明するが,実施例は本発明の実施形態を限定するものではない。
【0014】
生乳,脱脂粉乳,クリーム,砂糖,ゼラチン,クエン酸ナトリウム及び活性炭処理水にて,乳脂肪分3.65%,無脂乳固形分12.72%,ゼラチン0.5%,クエン酸ナトリウム0.14%,総固形分26.16%に調整した発酵基質9970kgを作製した。これをプレート式殺菌機にて80℃で加温後乳脂肪分の均質化処理をなし,98℃にて5秒間の殺菌後,42℃に冷却した。無脂乳固形分10%の還元脱脂粉乳で作製した発酵基質にて別途作製したラクトバチルス・ヘルベティカスGCL1001菌株スターター30kgを衛生的に添加し,攪拌均一後42±2℃にて発酵した。攪拌冷却により発酵を停止させ,停止後の乳酸酸度が1.05%になるようにして発酵ベースを作製した。
【0015】
砂糖19.15%,寒天0.68%,香料0.24%及び活性炭処理水79.93%の割合で配合したシラップ液を95℃にて10分間保持殺菌することで寒天を溶解した後,52℃に冷却して寒天シラップを作製した。
【0016】
発酵ベースをプレート式加温機にて52℃に加温し,寒天シラップと72:28の比率で混合後,ホモゲナイザーにて均質化処理をなし,容器に84gを充填・密封後急冷して,乳脂肪分2.5%,無脂乳固形分9.0%,乳酸菌数が約10/mlのヨーグルトを製造した。
【0017】
このように製造したヨーグルトは,淡い甘さのさわやかな香りを呈するものとなり,極めて嗜好性に富んだ味と香りを備えたものであった。
【0018】
一方このように製造したヨーグルトについて,以下の試験を行い,該ヨーグルトの整腸作用を確認した。
【0019】
【試験1】
上記ヨーグルトを,健常成人16名(男性,25〜60歳,平均年齢41.4歳,糞便内細菌叢解析は男性7名25〜60歳,平均年齢45.4歳)に摂取させた。被験者には試験期間中に本試験で提供されるヨーグルト以外の発酵乳や納豆,オリゴ糖,食物繊維,その他腸管内細菌叢に影響の大きい食品を摂取しないよう指示した。試験期間は8週とし,これを4期に分けた。第1〜2週を摂取前期間としてヨーグルトを摂取しない状態を調査した。第3〜4週を84g摂取期間として1日に84gのヨーグルトを摂取させた。第5〜6週を252g摂取期間として1日に252gのヨーグルトを摂取させ,第7〜8週を非摂取期間とした。
【0020】
結果を表3,表4及び図1に示す。表3によれば,糞便色調は摂取前期間の値と比較して,毎日84g及び252gのヨーグルトを摂取することにより糞便色調が有意に黄色化することが判明した。また毎日252g摂取することにより糞便臭気が弱くなることが判明した。一方,図1によれば,毎日84g及び252gのヨーグルトを摂取することにより糞便形状における適正状態の出現率が,摂取前の約65%程度から約80%程度に有意に増加し,摂取後は徐々に摂取前の状態に戻ることが判明した。また表4により,ヨーグルトを摂取すると善玉菌と称されるビフィズス菌の菌数及び占有率が増加し,悪玉菌と称されるクロストリディウム・パーフリンゲンス(Clostridium perfringens)及びその他のクロストリディウム属(Clostridium−others)が減少する。これらはラクトバチルス・ヘルベティカスGCL1001菌株を使用したヨーグルトを1日84g摂取することにより,整腸作用が得られることを示している。
【0021】
【試験2】
上記ヨーグルトを健常成人39名(男性26名,女性13名,23〜61歳,平均年齢34.7歳,糞便内細菌叢解析は男性8名,25〜61歳,平均年齢32.9歳)に摂取させた。被験者には試験期間中に本試験で提供されるヨーグルト以外の発酵乳や納豆,オリゴ糖,食物繊維,その他腸管内細菌叢に影響の大きい食品を摂取しないよう指示した。試験期間は10週とし,これを5期に分けた。第1〜2週を非摂取期間として非摂取中の状態を調査した。第3〜4週をヨーグルト摂取期間として1日に84gのヨーグルトを摂取させた。第5〜6週を非摂取期間として非摂取中の状態を調査した。7〜8週をプラセボ摂取期間として,プラセボ,即ち上記ラクトバチルス・ヘルベティカスGCL1001菌株を使用する以外は同一の配合成分とし,これを乳酸によって酸度を調整し,味覚において供試発酵乳と差のない疑似発酵乳を1日に84g摂取させ,第9〜10週を非摂取期間とした。
【0022】
結果を表5及び表6に示す。表5によればヨーグルトを摂取することにより,排便日数,排便回数,排便量が非摂取期間と比較して増加することが判明した。また排便日数および排便回数はプラセボ摂取期間と比較しても有意に多くなることが判明した。一方,表6によればヨーグルト摂取によるビフィズス菌の菌数増加及びビフィズス菌占有率の有意な増加は,ヨーグルトに含まれるラクトバチルス・ヘルベティカスGCL1001の働きによるものであることがわかる。
【0023】
調査1及び調査2で示された糞便内細菌叢における善玉菌と称されるビフィズス菌菌数の増加及びこれによる糞便性状の改善効果は,このヨーグルトの特徴であるラクトバチルス・ヘルベティカスGCL1001菌株を使用して発酵基質を発酵させることにより得られることを示している。
【0024】
これら試験におけるアンケート調査及び糞便内細菌叢の解析は,以下に示す方法により行った。
【0025】
即ちアンケート調査方法は被験者に実施記録,排便記録の記入を依頼し,毎日の排便状況,毎回の糞便性状及び特記事項の有無を調査することで実施した。実施記録に体調,食事内容,薬の服用の有無及び腹痛などの消化器症状を記録させた。排便記録に毎回の糞便量および糞便性状(糞便色調,糞便臭気,糞便形状および排便後の感覚)を記録させた。糞便量は,調査1においては直径40mmのピンポン玉の個数に,また調査2においては直径20mm長さ100mmの円柱棒に換算して記録させた。糞便性状のうち糞便色調,糞便臭気および排便後の感覚は,被験者の判定を数値化した。すなわち糞便色調はDICカラーガイド17版(大日本インキ化学(株))の1黄色(DIC206),2薄い黄土色(DIC336),3黄土色(DIC240),4茶色(DIC341),5焦げ茶色(DIC308),6黒に近い焦げ茶色(DIC311)を標準色として被験者に配布し,最も近いと思われる色を記入させた。糞便臭気は1非常に弱い,2弱い,3普通,4強い,5非常に強い,の5段階に分け記録させた。排便後の感覚は,1非常にスッキリ,2おおむねスッキリ,3普通,4スッキリせず残便感あり,の4段階に分け記録させた。この記録から各被験者の排便1回あたりの平均値を期間毎に算出した。糞便性状のうち糞便形状は,1下痢または水状,2泥状,3半練り状,4バナナ状,5固い,6コロコロ状,の6段階に分け記録させ,試験1においては期間毎に被験者全体の回答に対する各状態の出現率を算出し,試験2においては数値化し平均値を期間毎に算出した。試験2においては3回の無摂取期間の平均を被験者の無摂取期間の値とした。
【0026】
糞便内細菌叢の解析方法は,同意の取れた被験者から各期間の終了時に1回ずつ糞便を採取して実施した。
【0027】
排泄された糞便1回の全量をポリ袋に採取し,脱酸素剤(アネロパックケンキ,三菱ガス化学(株))とともに酸素非透過性のパウチ袋に入れ,保冷剤にて低温を維持し輸送した。採取した糞便を均質化した後,嫌気性希釈液に懸濁した。系列希釈によって10倍までの糞便希釈液を作成し,3種類の非選択培地(BL,EG,TS)および5種類の選択培地(BS,NN,mLBS,DHL,TATAC)に塗布した。TS,DHLおよびTATACは好気的に,その他の培地はスチールウール法により嫌気的に培養した。また等量のエタノールと糞便希釈液を混合し室温に30分保持した後,BLおよびEGに塗布し嫌気的に培養することで芽胞形成菌を分離した。出現したコロニーを釣菌し,集落形態,グラム染色性,菌形態,レシチナーゼ反応,好気条件下での発育および芽胞の有無を観察し,バクテロイデス科(Bacteroidaceae),ビフィズス菌(Bifidobacterium),ユーバクテリウム属(Eubacterium),ペプトコッカス科(Peptococcuceae),メガスフェラ属(Megasphera),クロストリディウム・パーフリンゲンス(Clostridium perfringens),その他のクロストリディウム属(Clostridium−others),ラクトバチルス属(Lactobacillus),腸内細菌科(Enterobacteriaceae),腸球菌科(Enterococcus)に群分けした。菌数は糞便1gあたりの常用対数(log cfu/g)で示した。特にビフィズス菌(Bifidobacterium)については,その菌数に加えて各被験者の総菌数に対するビフィズス菌(Bifidobacterium)の菌数の割合を,ビフィズス菌占有率として百分率で示した。
【0028】
以上のようにラクトバチルス・ヘルベティカスGCL1001菌株を使用して製造したヨーグルト(発酵乳)は,善玉菌と称されるビフィズス菌菌数の増加,ビフィズス菌の糞便中での占有率をアップさせ,一方で悪玉菌と称されるクロストリディウム・パーフリンゲンスを減少させ,その結果,整腸作用,便性状の改善をもたらすことが確認された。
【0029】
【表3】
Figure 0003579031
【0030】
【表4】
Figure 0003579031
【0031】
【表5】
Figure 0003579031
【0032】
【表6】
Figure 0003579031
【0033】
【図1】調査1でのアンケート調査における糞便形状の結果を示す。
Figure 0003579031
【0034】
【発明の効果】
以上のとおり,請求項1に記載の発明は,ラクトバチルス・ヘルベティカスGCL1001菌株を用いて原料乳を発酵させることによって優れた整腸作用を備えるとともに嗜好性に富む機能性発酵乳製品を提供することができる。また請求項2に記載の発明は,この機能性発酵乳製品の製造方法を提供することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a functional fermented milk product such as a yogurt, a lactic acid bacterium beverage and the like, and a method for producing the same.
[0002]
Problems to be solved by the prior art and the invention
As this kind of functional fermented milk product, for example, yogurt which is considered to have an intestinal action is commercially available, but lactic acid bacteria used for imparting the intestinal action have, for example, acetic acid odor produced by bifidobacteria, etc. As a result of the odor produced by the acidophilus bacteria remaining in the product, which impairs the flavor of the product, functional fermented milk products are disliked and become a factor inhibiting the spread of the product.
[0003]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a functional fermented milk product having an excellent intestinal action and having a high palatability, and a method for producing the same.
[0004]
[Means for Solving the Problems]
As a result of intensive studies along the above-mentioned subject, for example, Lactobacillus helveticus GCL1001 strain, a lactobacillus belonging to Lactobacillus helveticus isolated from fermented milk in Central Asia (deposited at the Patent Organism Depositary of the National Institute of Advanced Industrial Science and Technology, National Institute of Advanced Industrial Science and Technology) No. FERM P-18654), and the raw milk is fermented by the strain, the strain exhibits a high intestinal action, and the above-mentioned odor is eliminated. It has a favorable refreshing scent, in other words, a refreshing scent with a rich tasting fragrance, and has been found to be a functional fermented milk product having both intestinal action and palatability.
[0005]
The present invention has been made on the basis of such findings, and the invention of claim 1 was compared with Lactobacillus helveticus GCL1001 strain (Lactobacillus helveticus strain GCL1001; 18654) to provide a functional fermented milk product such as a yogurt or a milky lactic acid bacterium beverage, wherein the raw milk is fermented to give an intestinal function.
[0006]
In order to provide a method for producing the same, the invention according to claim 2 uses Lactobacillus helveticus GCL1001 strain (Lactobacillus helveticus strain GCL1001 (Deposit No. FERM P-deposited by the National Institute of Advanced Industrial Science and Technology). 18654) to ferment raw milk to impart an intestinal function to a method for producing a functional fermented milk product such as a yogurt or a milky lactic acid bacterium beverage.
[0007]
The Lactobacillus helveticus GCL1001 strain used in the present invention has been deposited as FERM P-18654 with the National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary, and its taxonomic properties are as shown in Table 1. The strain is also M. By PCR using specific primers of Lactobacillus helveticus reported by Ventura et al. (M. Ventura, ML Callegari, L. Morelli, FEMS Microbiol. Lett., 189 275-279 (2000)), Table 2 was obtained. Can be distinguished from other strains by amplifying a DNA fragment containing the nucleotide sequence shown in (1).
[0008]
[Table 1]
Figure 0003579031
[0009]
[Table 2]
Figure 0003579031
[0010]
The functional fermented milk product of the present invention can be various products such as, for example, yogurt and lactic acid bacteria beverages, and the raw milk thereof must have a non-fat milk solid content of a milk component. For example, animal milk such as milk, skim milk thereof or the like may be used, and if necessary, milk fat, sugar, fruit, gelling agents, flavors and the like may be added or strengthened.
[0011]
The fermentation of the raw milk is carried out by inoculating the starter of the Lactobacillus helveticus GCL1001 strain into the raw milk (fermentation substrate) blended and sterilized according to a conventional method, and adjusting the fermentation temperature to, for example, about 30 to 45 ° C, preferably 38 to 45 ° C. C., and the fermentation time is, for example, about 2 to 10 hours, preferably about 4 to 6 hours.
[0012]
Fermented dairy products using Lactobacillus helveticus GCL1001 strain are those which have strong resistance to artificial gastric juice and intestinal juice and can exhibit intestinal action, while having a refreshing aroma to enhance palatability. Thus, it is possible to obtain a functional fermented milk product having both intestinal action and palatability. According to the experiments by the inventors, the resistance of the strain to artificial gastric juice does not decrease even after 3 hours, and the resistance to artificial intestinal juice shows a strong result of about 50% after 12 hours. Was. The intestinal action can be exerted by, for example, setting the daily intake of yogurt by healthy adults to 100 g or less, for example, 80 to 90 g.
[0013]
【Example】
Hereinafter, the present invention will be described more specifically with reference to examples, but the examples do not limit the embodiments of the present invention.
[0014]
Raw milk, skim milk powder, cream, sugar, gelatin, sodium citrate and water treated with activated carbon, 3.65% milk fat, 12.72% non-fat milk solids, 0.5% gelatin, 0% sodium citrate. 9970 kg of a fermentation substrate adjusted to 14% and a total solid content of 26.16% was prepared. This was heated at 80 ° C. in a plate sterilizer, homogenized for milk fat, sterilized at 98 ° C. for 5 seconds, and then cooled to 42 ° C. Lactobacillus helveticus GCL1001 strain starter (30 kg) separately prepared with a fermentation substrate prepared from reduced skim milk powder having a non-fat milk solid content of 10% was hygienically added, and the mixture was stirred and homogenized, followed by fermentation at 42 ± 2 ° C. The fermentation was stopped by stirring and cooling, and a fermentation base was prepared such that the lactic acidity after the stop was 1.05%.
[0015]
After dissolving the agar by holding and sterilizing a syrup solution containing 19.15% of sugar, 0.68% of agar, 0.24% of flavor and 79.93% of activated carbon-treated water at 95 ° C for 10 minutes, After cooling to 52 ° C., an agar syrup was prepared.
[0016]
The fermentation base was heated to 52 ° C. with a plate-type warmer, mixed with agar syrup at a ratio of 72:28, homogenized with a homogenizer, filled with 84 g into a container, sealed, and rapidly cooled. Yogurt having a milk fat content of 2.5%, a non-fat milk solid content of 9.0%, and a lactic acid bacteria count of about 10 8 / ml was produced.
[0017]
The yogurt produced in this way had a refreshing aroma with a light sweetness, and had an extremely palatable taste and aroma.
[0018]
On the other hand, the following tests were performed on the yogurt thus produced, and the intestinal action of the yogurt was confirmed.
[0019]
[Test 1]
The above yogurt was ingested by 16 healthy adults (male, 25 to 60 years old, average age 41.4 years, 7 males 25 to 60 years old, average age 45.4 years in fecal flora analysis). Subjects were instructed not to consume fermented milk other than yogurt, natto, oligosaccharides, dietary fiber, and other foods that have a significant effect on intestinal flora other than the yogurt provided during the study. The test period was eight weeks, which was divided into four periods. The state in which yogurt was not ingested was examined with the first to second weeks as the pre-ingestion period. 84 g of yogurt was ingested per day with the 3rd to 4th week being an 84 g intake period. Weeks 5 to 6 were taken as a 252 g intake period, and 252 g of yogurt was ingested per day, and weeks 7 to 8 were taken as a non-ingestion period.
[0020]
The results are shown in Tables 3 and 4 and FIG. According to Table 3, the fecal color tone was found to be significantly yellowed by ingesting 84 g and 252 g of yogurt every day as compared with the value in the pre-ingestion period. In addition, it was found that ingestion of 252 g daily reduced fecal odor. On the other hand, according to FIG. 1, daily intake of 84 g and 252 g of yogurt significantly increases the appearance rate of the proper state in the stool form from about 65% before ingestion to about 80%, and after ingestion. It turned out to gradually return to the state before ingestion. According to Table 4, when yogurt is ingested, the number and occupancy of bifidobacteria, which are called good bacteria, increase, and Clostridium perfringens, which is called bad bacteria, and other Clostridium perfringens. The genus Clostridium-others is reduced. These indicate that ingestion of 84 g / day of yogurt using Lactobacillus helveticus GCL1001 strain can provide an intestinal action.
[0021]
[Test 2]
39 healthy adults (26 males, 13 females, 23-61 years old, average age 34.7 years, fecal flora analysis 8 males, 25-61 years old, average age 32.9 years) using the above yogurt Was ingested. Subjects were instructed not to consume fermented milk other than yogurt, natto, oligosaccharides, dietary fiber, and other foods that have a significant effect on intestinal flora other than the yogurt provided during the study. The test period was 10 weeks, which was divided into 5 periods. The state during non-ingestion was investigated with the first and second weeks as non-ingestion periods. The third to fourth weeks were set as a yogurt intake period, and 84 g of yogurt was ingested per day. The state during non-ingestion was investigated with the 5th to 6th week as a non-ingestion period. The placebo intake period is 7 to 8 weeks, and the same ingredients are used except for the placebo, ie, the above-mentioned Lactobacillus helveticus GCL1001 strain. The acidity is adjusted with lactic acid, and there is no difference in taste from that of the test fermented milk. 84 g of the simulated fermented milk was ingested daily, and the 9th to 10th weeks were the non-ingestion period.
[0022]
The results are shown in Tables 5 and 6. According to Table 5, it was found that ingestion of yogurt increased the number of defecation days, the number of defecations, and the amount of defecation compared to the non-consumption period. It was also found that the number of defecation days and the number of defecations were significantly increased as compared with the placebo intake period. On the other hand, according to Table 6, it can be seen that the increase in the number of bifidobacteria and the significant increase in the occupancy rate of bifidobacteria due to ingestion of yogurt are due to the function of Lactobacillus helveticus GCL1001 contained in yogurt.
[0023]
The Lactobacillus helveticus GCL1001 strain, which is a characteristic of this yogurt, was used to increase the number of bifidobacteria called good bacteria in the fecal flora shown in Surveys 1 and 2, and to improve the fecal properties. And fermenting the fermentation substrate.
[0024]
The questionnaire survey and the analysis of fecal flora in these tests were performed by the following methods.
[0025]
In other words, the questionnaire survey method was performed by asking the test subject to fill out the implementation record and defecation record, and examining the daily defecation status, fecal properties each time, and the presence or absence of special instructions. The performance records included physical condition, diet, the use of medicines, and digestive symptoms such as abdominal pain. The stool volume and stool properties (fecal color, stool odor, stool shape and post-fecal sensation) were recorded in each stool record. The amount of feces was recorded in Survey 1 as the number of ping-pong balls having a diameter of 40 mm, and in Survey 2 in terms of a cylindrical rod having a diameter of 20 mm and a length of 100 mm. Among the stool properties, stool color, stool odor and feeling after defecation were quantified by the subject's judgment. That is, the stool color tone is DIC Color Guide 17th Edition (Dainippon Ink & Chemicals, Inc.), 1 yellow (DIC206), 2 pale ocher (DIC336), 3 ocher (DIC240), 4 brown (DIC341), 5 dark brown (DIC). DIC 308) and dark brown (DIC 311) close to 6 black were distributed to the subjects as standard colors, and the colors considered to be the closest were filled in. The fecal odor was recorded in five levels: 1 very weak, 2 weak, 3 normal, 4 strong, and 5 very strong. The feelings after defecation were recorded in four stages: 1 very refreshing, 2 almost refreshing, 3 normal, 4 refreshing and feeling of residual stool. From this record, the average value of each subject for each bowel movement was calculated for each period. Of the fecal properties, the fecal shape was recorded in six stages: 1 diarrhea or watery, 2 muddy, 3 semi-paste, 4 banana, 5 hard, 6 roller, and in test 1, subjects were recorded every period. The appearance rate of each state with respect to the whole answer was calculated, and in Test 2, the rate was quantified and the average value was calculated for each period. In Test 2, the average of the three non-consumption periods was taken as the value of the subject's non-consumption period.
[0026]
The analysis of fecal flora was performed by collecting feces once at the end of each period from subjects who agreed.
[0027]
Collect the entire amount of excreted feces in a plastic bag, put it in an oxygen-impermeable pouch bag together with a deoxidizer (Anelopack Kenki, Mitsubishi Gas Chemical Co., Ltd.), and maintain it at a low temperature with a cooling agent to transport it. did. The collected feces were homogenized and suspended in an anaerobic diluent. Create a fecal dilution of up to 10 8 times by serial dilutions, three non-selective medium (BL, EG, TS) and five selective media was applied (BS, NN, mLBS, DHL , TATAC) to. TS, DHL and TATAC were cultured aerobically, and the other medium was anaerobically cultured by a steel wool method. Further, an equal amount of ethanol and a feces diluent were mixed and kept at room temperature for 30 minutes, and then applied to BL and EG and cultured anaerobically to separate spore-forming bacteria. The emerged colonies were picked, and the colony morphology, Gram stainability, bacterial morphology, lecithinase reaction, growth under aerobic conditions, and the presence or absence of spores were observed. Bacteroideaceae, Bifidobacterium, Eubacterium Eubacterium, Peptococcusae, Megasphera, Clostridium perfringens, other genus Clostridium-othersus, Lacticus-Lactylus-Lactylus , Enterobacteriaceae, and Enterococcus. The number of bacteria was indicated by logarithm of common use per 1 g of stool (log cfu / g). In particular, for Bifidobacterium, the ratio of the number of Bifidobacterium to the total number of bacteria of each subject, in addition to the number of bacteria, was expressed as a percentage of the occupancy of Bifidobacterium.
[0028]
As described above, yogurt (fermented milk) produced using Lactobacillus helveticus GCL1001 strain increases the number of bifidobacteria called good bacteria and increases the occupancy of bifidobacteria in feces. In this study, it was confirmed that Clostridium perfringens, which is referred to as a bad bacterium, was reduced, resulting in intestinal regulation and improvement of stool properties.
[0029]
[Table 3]
Figure 0003579031
[0030]
[Table 4]
Figure 0003579031
[0031]
[Table 5]
Figure 0003579031
[0032]
[Table 6]
Figure 0003579031
[0033]
FIG. 1 shows the results of the stool shape in the questionnaire survey in Survey 1.
Figure 0003579031
[0034]
【The invention's effect】
As described above, the invention according to claim 1 provides a functional fermented milk product having an excellent intestinal action and a high palatability by fermenting raw milk using Lactobacillus helveticus GCL1001 strain. Can be. The invention according to claim 2 can provide a method for producing this functional fermented milk product.

Claims (2)

乳酸桿菌であるラクトバチルス・ヘルベティカスGCL1001菌株(独立行政法人産業技術総合研究所特許生物寄託センター寄託番号FERM P−18654)を用いて原料乳を発酵させて整腸作用を付与したことを特徴とするヨーグルト,乳酸菌飲料等の機能性発酵乳製品。Lactobacillus helveticus GCL1001 strain, which is a lactobacillus (Deposit No. FERM P-18654, deposited by National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary) is fermented to impart intestinal action by fermenting raw milk. Functional fermented milk products such as yogurt and lactic acid bacteria beverages. 乳酸桿菌であるラクトバチルス・ヘルベティカスGCL1001菌株(独立行政法人産業技術総合研究所特許生物寄託センター寄託番号FERM P−18654)を用いて原料乳を発酵させて整腸作用を付与することを特徴とするヨーグルト,乳酸菌飲料等の機能性発酵乳製品の製造方法。Lactobacillus helveticus GCL1001 strain (deposited by National Institute of Advanced Industrial Science and Technology, Patent Organism Depositary No. FERM P-18654), which is a lactobacillus, is fermented with raw milk to impart an intestinal function. A method for producing functional fermented milk products such as yogurt and lactic acid beverages.
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