국내 시판 액상요구르트의 품질특성
Quality characteristics of commercial liquid type yogurt in Korea
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초록
Yogurt is produced by fermentation of milk using bacteria known as “yogurt cultures”. Most of these bacteria are probiotics such as Lactobacillus delbrueckii subsp. bulgaricus, Lb. rhamnosus, Streptococcus thermophilus, and Bifidobacterium. The domestic fermented milk market is increasing, and about 30 companies are producing yogurt. The purpose of this study was to analyze the quality characteristics of domestic commercial liquid yogurt. Total 30types of commercial yogurts were sampled and their physicochemicial properties, including pH, sugar content, acidity, viscosity, and microbial characteristics of lactic acid bacteria counts, were measured. Commercial liquid type yogurt showed a pH of 4.5, sugar content of 7.4-21.2%, total acid content of 0.4-0.9%, and viscosity of 0.1-250 cP. In terms of microbial populations, lactic acid bacteria counts were 7.2-11.3 log CFU/mL and anaerobic lactic acid bacteria counts were 8.0-11.5 log CFU/mL. The quality characteristics differed depending on the constituents of the sample and the microorganisms used. These results are related to the quality characteristics of yogurts and are useful for identifying new trends in the domestic fermented milk industry.
Abstract
Yogurt is produced by fermentation of milk using bacteria known as “yogurt cultures”. Most of these bacteria are probiotics such as Lactobacillus delbrueckii subsp. bulgaricus, Lb. rhamnosus, Streptococcus thermophilus, and Bifidobacterium. The domestic fermented milk market is increasing, and about 30 companies are producing yogurt. The purpose of this study was to analyze the quality characteristics of domestic commercial liquid yogurt. Total 30types of commercial yogurts were sampled and their physicochemicial properties, including pH, sugar content, acidity, viscosity, and microbial characteristics of lactic acid bacteria counts, were measured. Commercial liquid type yogurt showed a pH of 4.5, sugar content of 7.4-21.2%, total acid content of 0.4-0.9%, and viscosity of 0.1-250 cP. In terms of microbial populations, lactic acid bacteria counts were 7.2-11.3 log CFU/mL and anaerobic lactic acid bacteria counts were 8.0-11.5 log CFU/mL. The quality characteristics differed depending on the constituents of the sample and the microorganisms used. These results are related to the quality characteristics of yogurts and are useful for identifying new trends in the domestic fermented milk industry.
참고문헌 (19)
- Han YS, "Fermented Food", pp.133~147 (2012), Powerbook Publishing Co
- Gilliland SE, "Acidophilus milk products: A review of potential benefits to consumers", J Dairy Sci, 72, pp.2483~2494 (1989)
- Back YJ, "Fermented milk and lactic acid bacteria", Microorganisms Ind, 17, pp.60~68 (1991)
- 서재구, "프로바이오틱 제품 개발 동향과 과제", KSBB Journal, 25(4), pp.303~310 (2010), 한국생물공학회
- Jang SS, "Current status of fermented milk development", Korean J Food Sci An, 2, pp.12~18 (2013)
- Ahn YT, "Current state of functional yogurt in Korea", J Korean Dairy Technol Sci, 24, pp.29~42 (2006)
- Wang MK, "Physico-chemical and sensory properties of liquid type yogurt with Lactobacillus casei 911LC based on fermenting time", MS, pp.2003
- 신승렬, "단감 분말을 첨가한 요구르트 제조 및 품질특성", 한국식품저장유통학회지, 10(2), pp.175~181 (2003), 한국식품저장유통학회
- Kim SC, "Changes of components in the rice-porridge fermented by Nuruk", J Korean Soc Food Sci Nutr, 28, pp.1017~1021 (1999)
- Murti TW, "Bacterial growth and volatile compounds in yoghurt-type products from soymilk containing Bifidobacterium ssp", J Food Sci, 58, pp.153~157 (1993)
- Shin YS, "Preparation of yogurt added with potato and its characteristics", Korean J Food Sci Technol, 26, pp.266~271 (1994)
- Rasic JL, "Yoghurt Technical Diary", pp.103~ (1978), Publishing House
- Lee JH, "Studies on production of modified yoguhrt(soy cream)from soybean milk(I)", Korean J Food Sci Technol, 4, pp.194~199 (1972)
- Kim MS, "Physico-chemical properties of commercial yoghurt in Korea", Korean J Food Sci Technol, 25, pp.340~344 (1993)
- Lee HJ, "Fermentation properties of yogurt added with rice bran", Korean J Food Cookery Sci, 22, pp.488~494 (2006)
- Lee JA, "Quality characteristics of commercial yogurt powder marketed in Korea", Korean J Dairy Sci Technol, 32, pp.157~161 (2014)
- Lansing M, "Microbiology", pp.486~487 (2003), Life Science
- 배형철, "유산균주의 종류에 따른 쌀 첨가 요구르트의 발효 특성", 한국축산학회지, 46(4), pp.677~686 (2004), 한국축산학회
- 이미자, "유산균주의 종류에 따른 통보릿가루 첨가 요구르트의 품질 특성", 산업식품공학, 17(4), pp.311~318 (2013), 한국산업식품공학회[DOI]