모싯잎 에탄올 추출물을 첨가한 산업용 배지에서 배양한 유산균 발효물의 항비만 효과
Anti-obesity effects of lactic acid bacteria ferments cultured in industrial medium with ethanol extract of ramie leaf (Boehmeria nivea L.)
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본 연구에서는 모싯잎 에탄올 추출물이 첨가된 산업용 배지에 유산균(L. plantarum JBLAB0101와 L. rhamnosus GG(LGG)) 발효특성을 확인하였고, 발효물에 대한 항비만 효능 분석을 수행하였다. 유산균 발효기간 중 이화학적특성(pH, 총산도), 생균수, 유기산 및 유리당 함량을 분석하였다. 생균수는 발효 4일 차에 최대치로 8.75-8.85 log CFU/mL로 확인되었으며, 이에 따라 pH는 6.58-6.66에서 3.74-3.79로 감소하였고, 총산도는 0.39-0.40%에서 2.07-2.19%로 증가하였다. Lactic acid는 발효 4일 차에 1,676.03-1,910.12 mg%로 증가하였으며, glucose는 L. plantarum 균주에서 모두 소모되었고, LGG 균주는 348.35 mg% 잔존하였다. 항비만 효능 평가는 pancreatic lipase 저해활성과 3T3-L1 세포주를 이용한 지질분화억제능(지질축적률, 렙틴 생성량 및 PPAR-γ 및 SREBP-1c 유전자의 mRNA 발현량)을 분석하였다. 모싯잎 추출물 첨가 산업용 배지에 접종된 균주의 이름과 배양유무에 따라 비발효물(UFRL), JBLAB0101 발효물(FRLPLA) 및 LGG 발효물(FRLLGG)로 구분하였다. Lipase 저해활성은 UFRL, FRLPLA 및 FRLLGG을 동일농도 0.5 mg/mL에 처리 시 각각 12.19%, 30.10% 및 25.63%로 확인되었다. 3T3-L1 세포주에 FRLPLA를 200 μg/mL 처리함에 따라 비처리구에 비해 지질축적률, 렙틴 생성량, PPAR-γ 및 SREBP-1c 유전자의 mRNA 발현량이 각각 37.54%, 54.64%, 24.18% 및 31.32% 감소하였다. 이와 같은 결과로 항비만 효능이 있는 모싯잎 추출물이 첨가된 산업용 배지에 L. plantarum JBLAB0101 균주와 LGG 균주의 유산발효가 항비만 효능 증진 가능성이 기대된다.
Abstract
This study investigated the anti-obesity effects of lactic acid bacteria ferments cultured in industrial medium with ethanol extract of ramie leaf (Boehmeria nivea L.). On the 4th day of fermentation, the maximum live cell counts were 8.75-8.85 log CFU/mL, pH was 3.74-3.79, and total acidity was 2.07-2.19%. The fermentation of lactic acid bacteria on the fourth day resulted in the amount of lactic acid reaching 1,676.03-1,910.12 mg%. The lipase inhibitory activities of Lactiplantibacillus plantarum (L. plantarum) JBLAB0101 (FRLPLA) and Lactobacillus rhamnosus GG (LGG, (FRLLGG)) ferments were 30.10%, and 25.63%, respectively, at a concentration of 0.5 mg/mL. The lipid accumulation, leptin production, PPAR-γ and SREBP-1c mRNA levels were decreased to 37.54%, 54.64%, 24.18%, and 31.32%, respectively, at 200 μg/mL concentration of FRLPLA. These results suggest that anti-obesity effect could be increased by lactic acid bacteria in industrial medium with extract of ramie leaf.
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