Page 28 - 201705

2 4 食品科学技术学报摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 2017 年 9 月

摇 Effects of Free Phenol from Black Rice Bran on Combination
of Iodine and Starch and Starch Digestion

1,2 2 2,* 1,* 2
LI Huanhuan , 摇 WU Nana , 摇 TAN Bin , 摇 XIAO Zhigang , 摇 ZHAI Xiaotong , 摇
2 2 2 2 2
TIAN Xiaohong , 摇 LIU Yanxiang , 摇 LIU Ming , 摇 WANG Liping , 摇 GAO Kun
(1. College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, China;
2. Academy of State Administration of Grain, Beijing 100037, China)

Abstract: In this study, the alkali method was used to extract starch from early indica and organic sol鄄
vent was used to extract polyphenol from black rice bran. The polyphenol content was determined by
using high performance liquid chromatography (HPLC). The free phenol of black rice bran was added to
starch鄄iodine complex solution to study the effects of free phenol with starch鄄iodine compounds by scan鄄
ning the changes of absorption spectra. Furthermore, 琢鄄amylase was added to the solution to study the
effects of free phenol from black rice bran on the digestion of early indica starch. The results showed that
free phenol from black rice bran inhibited the combination of starch and iodine. The inhibition of phenol
to starch digestion increased with the increase of phenol concentration. The absorption peak moved to
short wavelength with the increase of phenol concentration, which is called blue shift. The reason might
be that the combination of phenol and starch changed the nature of the starch, which changed its absorp鄄
tion peak. The free phenol of black rice bran inhibited starch digestion through combination of phenol and
starch hydrophobic groups.

Keywords: black rice bran; free phenol; early indica starch; starch鄄iodine; digestion
(责任编辑:檀彩莲)
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Discussion on Regulatory Policy Status and Future Trends of

Infant Formula Powder Quality Safety in China

JIANG Yujun, 摇 ZHUANG Kejin, 摇 ZHANG Wei, 摇 MAN Chaoxin
(College of Food Science and Engineering / Key Lab of Dairy Science, Ministry of Education,
Northeast Agricultural University, Harbin 150030, China)

Abstract: Development of infant formula powder industry was hammered after the melamine incident in
2008, consumers爷 skepticism of infant formula powder quality safety has continued till now. In order to
improve the quality safety, a series of policies have been formulated by related departments of our state.
After the establishment of China Food and Drug Administration, stricter regulations have been issued.
Quality safety of infant formula powder has been significantly improved after efforts of government and
companies. This review summarized quality safety condition of infant formula powder, analyzed regulatory
policy of infant formula powder formulated by related departments, and discussed future trends.

Keywords: infant formula powder; quality safety; regulatory policy; management mechanisms
(责任编辑:叶红波)