Kefir에서 분리한 Streptococcus thermophilus LFG를 배양한 산양유 발효물에서 분리된 다당체의 특성

• 발행기관: 한국축산식품학회
• 저자명: 임영순 이시경
• 간행물 정보: 『Food Science of Animal Resources』Korean Journal for Food Science of Animal Resources 제29권 제2호, 143~150쪽, 전체 8쪽
• 주제분류: 농수해양 > 식품과학
• 파일형태: PDF
• 발행일자: 2009.03.01

영문 초록

This study was carried out to investigate the properties of crude exopolysaccaride (CEPS) produced by Streptococcus thermophilus LFG in goat milk. The yields of CEPS from yogurt cultured with Str. thermophilus LFG were greater at higher temperatures (40-45℃) than at lower temperatures (30-35℃). Goat milk yogurt had lower viscosity values than cow milk yogurt. However, the CEPS yield was higher in goat milk yogurt than in cow milk yogurt. The yields of CEPS from yogurt were also higher in cultured milk containing 3% glucose (14-21%), and 3% sucrose (4-16%) relative to the control yogurt. Antioxidant activities were higher in goat milk yogurt supernatant (21%) and its CEPS (28%) than cow milk yogurt supernatant (11%) and its CEPS (24%). The amino acid contents of CEPS were higher in yogurt using goat milk than that using cow milk. The CEPS extracted from goat milk yogurt produced by Str. thermophilus LFG consists of carbohydrate (37% w/w) and protein (63% w/w). The CEPS consisted of monosaccharides such as glucose 56.45% (w/w), galactose 42.35% (w/w), galactosamine 1.37% (w/w), glucosamine 1.09% (w/w) and fucose 0.27% (w/w).

키워드

CEPS crude exopolysaccharide Streptococcus thermophilus LFG