글로버메뉴 바로가기 본문 바로가기 하단메뉴 바로가기

논문검색은 역시 페이퍼서치

> 한국미생물생명공학회(구 한국산업미생물학회) > 한국미생물·생명공학회지 > 46권 1호

Characterization and Bioactivities of a Novel Exopolysaccharide Produced from Lactose by Bacillus tequilensis PS21 Isolated from Thai Milk Kefir

Characterization and Bioactivities of a Novel Exopolysaccharide Produced from Lactose by Bacillus tequilensis PS21 Isolated from Thai Milk Kefir

( Vijitra Luang-in ) , ( Worachot Saengha ) , ( Sirirat Deeseenthum )

- 발행기관 : 한국미생물생명공학회(구 한국산업미생물학회)

- 발행년도 : 2018

- 간행물 : 한국미생물·생명공학회지, 46권 1호

- 페이지 : pp.9-17 ( 총 9 페이지 )


학술발표대회집, 워크숍 자료집 중 1,2 페이지 논문은 ‘요약’만 제공되는 경우가 있으니,

구매 전에 간행물명, 페이지 수 확인 부탁 드립니다.

4,500
논문제목
초록(외국어)
The aims of this work were to characterize and determine bioactivities of crude exopolysaccharide (EPS) extract from Bacillus tequilensis PS21 isolated from milk kefir from Kampaeng Petch, Thailand. B. tequilensis PS21 produced 112.1 mg dried EPS/l from initial 80 g/l lactose in modified TSB media at 52 h, with EPS product yield of 8.9 mg EPS/g lactose and specific product yield of 0.3 mg EPS/mg biomass. The FTIR result confirmed EPS to be a protein-bound polysaccharide and SEM analysis showed the morphology to be a grainy appearance with an uneven surface, covered with pores. HPLC analysis determined EPS as a heteropolysaccharide consisting of five sugar units with the following molar ratios; xylose (17.65), glucose (2.54), ribose (1.83), rhamnose (1.23), and galactose (1). Chemical components of this EPS were predominantly carbohydrate at 697.8 mg/g EPS (65%), protein 361.4 mg/g EPS (34%), and nucleic acid 12.5 mg/g EPS (1%). The EPS demonstrated antioxidant activities at 57.5% DPPH scavenging activity, 37.2 μM Fe(II)/mg EPS and 34.9 μM TEAC μM/mg EPS using DPPH, FRAP and ABTS assays, respectively. EPS also exhibited anti-tyrosinase activity at 34.9% inhibition. This work represents the first finding of EPS produced by Bacillus sp. from Thai milk kefir which shows potential applications in the production of antioxidant functional foods and whitening cosmetics. However, optimization of EPS production for industrial exploitation requires further study to ascertain the economic potential.

논문정보
  • - 주제 : 자연과학분야 > 생물
  • - 발행기관 : 한국미생물생명공학회(구 한국산업미생물학회)
  • - 간행물 : 한국미생물·생명공학회지, 46권 1호
  • - 발행년도 : 2018
  • - 페이지 : pp.9-17 ( 총 9 페이지 )
  • - UCI(KEPA) : I410-ECN-0102-2018-400-004251937
저널정보
  • - 주제 : 자연과학분야 > 생물
  • - 성격 : 학술지
  • - 간기 : 계간
  • - 국내 등재 : KCI 등재
  • - 해외 등재 : - / SCOPUS
  • - ISSN : 1598-642x
  • - 수록범위 : 2002–2020
  • - 수록 논문수 : 1112