• 제목/요약/키워드: Food Science and Nutrition

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Physical, Chemical Properties and Structural Changes of Zaodan Pickled by Vacuum Decompression Technology

  • Sun, Naxin;Liu, Huiping;Zhang, Xiaowei;Wang, Hongni;Liu, Shaojuan;Chen, Pei;Yu, Weijie;Liu, Kai
    • 한국축산식품학회지
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    • 제38권2호
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    • pp.291-301
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    • 2018
  • To shorten the production cycle of Zaodan, this study first pickled Zaodan by a novel technology - vacuum decompression technology. Vacuum decompression technology could reduce the pickling time of Zaodan from 20 wk to about 9 wk. The protein content, moisture and pH of the Zaodan egg white gradually decreased with a concomitant increase in salt during the pickling process. The total sulfhydryl group (SH) group content of the egg white proteins was increased to $2.43{\times}10^{-3}mol/L$ after being pickled for 30 d, whereas the content of disulphide bonds (SS) was reduced to $23.35{\times}10^{-3}mol/L$. The surface hydrophobicity was lowest after pickling for 30 d. In addition, great changes occurred in the secondary structure of the egg white proteins after pickling for 20 d. The disappearance of ovomucin was noticeable based on sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis.

Tachioside, an Antioxidative Phenolic Glycoside from Bamboo Species

  • Li, Ting;Park, Min-Hee;Kim, Mi-Jeong;Ryu, Bog-Mi;Kim, Myo-Jung;Moon, Gap-Soon
    • Food Science and Biotechnology
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    • 제17권6호
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    • pp.1376-1378
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    • 2008
  • Tachioside (4-hydroxy-3-methoxy-phenyl-1-O-glucoside), a known phenolic glycoside, was isolated from various bamboo species. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and Trolox equivalent antioxidant capacity determined a significant antioxidant activity of tachioside which was comparable to L-ascorbic acid. Each culm and leaf extracts were tested and the culm of Phyllostachys bambusoides appeared to contain the highest amount of tachioside.

Physicochemical and Textural Properties of Noodles Prepared from Different Potato Varieties

  • Kang, Jinsoo;Lee, Jungu;Choi, Moonkyeung;Jin, Yongik;Chang, Dongchil;Chang, Yoon Hyuk;Kim, Misook;Jeong, Yoonhwa;Lee, Youngseung
    • Preventive Nutrition and Food Science
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    • 제22권3호
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    • pp.246-250
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    • 2017
  • This study was performed to investigate the quality characteristics of noodles made from four different potato varieties: Atlantic, Go-un, Sae-bong, Jin-sun, and wheat flour. Quality characteristics of five noodles were analyzed by general components analysis, cooking quality (rate of water absorption, cooking loss, and volume increase), and mechanical textural properties. Some variations existed in wheat- or potato-based noodles for the general components analysis, but no clear trend was observed. Higher values in the rates of water absorption, cooking loss, and volume increase were observed for the wheat flour noodle, while some variations were observed for potato noodles depending on the variety. The wheat flour noodles exhibited higher values of textural characteristics obtained from the texture profile analysis, except for adhesiveness. Higher gluten contents as well as lower ash contents in the wheat flour noodles compared to the potato noodles are thought to be the two key factors contributing to this finding.

NUTRITION, HEALTH AND FUNCTIONAL FOODS

  • Seyama Yousuke
    • 한국식품영양과학회:학술대회논문집
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    • 한국식품영양과학회 2001년도 International Symposium on Food,Nutrition and Health for 21st Century
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    • pp.1-6
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    • 2001
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