作者机构：
[Zheng, Jingxing; Li, Zhonghai; Peng, Xianglian; Zhong, Haiyan; Li, Jille] Cent S Univ Forestry & Technol, Fac Food Sci & Technol, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Li, Zhonghai] C;Cent S Univ Forestry & Technol, Fac Food Sci & Technol, Changsha 410004, Hunan, Peoples R China.
会议名称：
International Symposium on Asian Plants with Unique Horticultural Potential, IHC 2006
会议时间：
13 August 2006 through 19 August 2006
关键词：
Calcium chloride;Chitosan;Kumquat;Membrane lipid peroxidation;Senescence of fruit
摘要：
This paper introduced the effect of Chitosan and CaCl(2) complex fresh-keeping agents on senescence and activated oxygen metabolism of postharvest kumquat fruits after harvest at normal atmospheric temperatures. The results showed that the activities of superoxide dismutase were decreased and the accumulation of MDA was restrained. The ripening and senescence of fresh kumquat could be significantly delayed by using chitosan and CaCl(2) complex.
摘要：
The regulation effects of corn bran dietary fibre (CDF) and the xylanase modified form (XMF) in male Sprague Dawley rats on the expression of several genes involved in lipid metabolism were studied. Rats for NF and HF group (8 per group) were fed basic diet (NF) and atherogenic diet (HF), respectively, for six weeks. The rats for CDF or XMF group were fed HF diet, for two weeks first then changed to CDF (10%) or XNIF (10%) diet, respectively, for four weeks. XNIF ingestion lowered serum total cholesterol (TC), triacylglycerols (TG), low-density lipoprotein cholesterol (LDL-C) and increased high-density lipoprotein cholesterol (HDL-C) significantly (P < 0.05) as compared with CDF; The corresponding liver TC, TG and fat in XMF group were also significantly lower (p < 0.05). CDF ingestion lowered serum TC, TG, LDL-C, arteriosclerosis index (AI), and liver fat significantly (p < 0.05). AI in XMF group was less than 50% of that in CDF group. XMF enhanced the catabolism of lipids by up-regulating the transcription of hepatic cholesterol 7 alpha-hydroxylase (CYP7A1), peroxisome proliferator-activated receptors (PPAR alpha and PPAR gamma), lipoprotein lipase (Lpl), liver lipase and ileum farnesoid X receptor (FXR), down-regulating the transcription of intestine-bile acid binding protein (I-BABP) and hepatic FXR. While CDF only down-regulated I-BABP transcription, up-regulated ileum FXR, liver PPAR alpha, Lpl and CYP7A1 transcription. (C) 2008 Elsevier Ltd. All rights reserved.
作者机构：
[聂长明; 姜赛红; 林达; 武亚新; 文松年] School of Chemistry and Chemical Engineering, Nanhua University;[李忠海] Faculty of Food Science and Engineering, Central South University of Forestry ＆ Technology
