56 - 食品科学技术页

Review on Whey Protein Bioactive Peptides
ZHAO Lina 1,2 ,摇 WANG Shaoyun1,* ,摇 HUANG Yifan 2
(1. College of Biology science and Engineering, Fuzhou University, Fuzhou 350002, China;
2 . College of Food Science, Fujian Agriculture and Forestry University , Fuzhou 350002, China )
Abstract: Due to the maturity of the separation and extraction technology and the rise of the research and
product development of milk source active peptides, many potential bioactive peptides were found from
whey protein. This paper reviewed recent鄄years researches about whey protein bioactive peptides. The
mechanisms of antioxidant activity, ACE inhibitory activity, and cholesterol鄄lowering activity were intro鄄
duced. With the improvement of the research, function characteristic of whey protein bioactive peptides
will be fully developed and utilized.
Key words: whey protein; bioactive peptides; antioxidant activity; ACE inhibitory activity; inhibit cho鄄
lesterol activity
( 责任编辑: 檀彩莲
詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬
)
( 上接第 47 页 )
Screening and Identifying of Bacillus amyloliquefaciens for
Cellulase Production and its Enzymatic Characters
CUI Haiyang,摇 CHENG Shiwei * ,摇 HUANG Tianhong,摇 LI Xiujuan,摇 YANG Lihong,摇 CHEN Guozhong
( School of Life Science, Ludong University, Yantai 264025, China )
Abstract: A cellulase鄄producing strain was isolated and identified and their enzymatic characters were
analyzed. The selected strain straining with congo red was studied with the morphological, physiological
and biochemical characteristics as well as 16S rDNA sequence homology. Moreover, the effecting factors
for the cellulase activity, such as optimal temperature, optimal pH, pH stability, and thermal stability
and effects of metal ions were studied. Finally, the distribution of cellulase system was examined. The
results indicated that the strain is Bacillus amyloliquefaciens and the optimal temperature and pH was 30
益 and pH 8郾 0. Higher stability of the cellulase was obtained at 10 - 60 益 and pH stability was better at
pH 5 - 8. Mn2 + and Ba2 + were the activated factors for the enzyme. The activity of CMCase,FPcellulase
and 茁鄄glucosidase were 307郾 23 U / mL, 70郾 37 U / mL, and 131郾 55 U / mL, respectively, which had higher
cellulase activity expect as avicelase (16郾 39 U / mL) . So the results suggested that the cellulase from
Bacillus amyloliquefaciens had potential applications in the feed additive.
Key words: cellulase; screening and identifying; Bacillus amyloliquefaciens; enzymatic character
( 责任编辑: 檀彩莲)
35
第 32 卷 第 3 期摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 赵立娜等: 乳清蛋白生物活性肽及其应用前景