Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Flavor and Volatile Compounds of Soy Yogurt

대두요구르트의 향미(香味)와 휘발성분(揮發成分)

  • Lee, Jung-Sook (Department of Food and Nutrition, Duksung Women's College) ;
  • Kim, Young-Bae (College of Agriculture, Korea University) ;
  • Ko, Young-Tae (Department of Food and Nutrition, Duksung Women's College)
  • 이정숙 (덕성여자대학 식품영양학과) ;
  • 김영배 (고려대학교 농과대학) ;
  • 고영태 (덕성여자대학 식품영양학과)
  • Published : 1985.02.28
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Abstract

Soy milks prepared from full-fat soy flour, defatted soy flow, soy protein concentrate (SPC) and soy protein isolate (SPI) were fermented with Lactobacillus acidophilus. Effects of lactic fermentation on the flavor and volatile compounds of soy milks were investigated. Sensory evaluation showed that the flavor of soy yogurt beverages was inferior to that of milk yogurt beverage and the flavor of SPI-yogurt beverage was better than that of other soy yogurt beverages. SPI-milk fermented with L. acidophilus was more acceptable than unfermented SPI-milk. Lactic fermentation reduced n-hexanal in SPC-milk and SPI-milk while it increased diacetyl in both soy milks.

본 연구는 전지대두분(全脂大豆粉), 탈지대두분(脫脂大豆粉) 농축대두단백(SPC), 분리대두단백(SPI)으로 만든 대두유산균음료의 향미(香味)를 비교관찰하고, 유산균발효가 두유의 향미(香味)와 몇가지 휘발성분에 미치는 영향을 조사한 것으로서 그 결과를 요약하면 다음과 같다. 대두유산균음료는 reference로 사용된 우유유산균음료보다 향미(香味)가 떨어졌으며, 대두유산균음료 가운데는 SPI 유산균음료의 향미(香味)가 가장 우수했고 전지대두(全脂大豆) 유산균음료의 향미(香味)가 가장 저조했다. Hedonic scale과 2점기호실험(點嗜好實驗)의 결과를 보면 SPI 유산균음료의 향미(香味)가 SPI두유의 향미(香味)보다 훨씬 우수했다(P<0.01). 유산균발효에 의하여 SPC두유와 SPI두유에 함유된 n-hexanal은 감소하였고, diacetyl을 증가하였다.

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