News Column

New Data from Ministry of Agriculture Illuminate Findings in Antioxidants

June 3, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Antioxidants is now available. According to news reporting out of Beijing, People's Republic of China, by NewsRx editors, research stated, "Sweet potato protein hydrolysates (SPPH) were prepared by Alcalase. The (OH)-O-center dot scavenging activity and Fe2+-chelating ability of SPPH were investigated."

Our news journalists obtained a quote from the research from the Ministry of Agriculture, "SPPH was further separated into four fractions by membrane ultrafiltration, and low-molecular-weight fraction F-IV (

According to the news editors, the research concluded: "Five peptides derived from fractions IV-5c and IV-5i were characterized by LC-MS/MS, of which Thr-Tyr-Gln-Thr-Phe, Ser-Gly-Gln-Tyr-Phe-Leu and Tyr-Met-Val-Ser-Ala-Ile-Trp-Gly matched the sequence of sporamin A, while Tyr-Tyr-Ile-Val-Ser and Tyr-Tyr-Asp-Pro-Leu matched the sequence of sporamin B. In addition, (OH)-O-center dot scavenging activities of the five peptides were determined using synthesized peptides, and Tyr-Tyr-Ile-Val-Ser showed the highest (OH)-O-center dot scavenging activity, which was 74.52% at a concentration of 1.0 mg/mL."

For more information on this research see: Purification and identification of antioxidant peptides from sweet potato protein hydrolysates by Alcalase. Journal of Functional Foods, 2014;7():191-200. Journal of Functional Foods can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Journal of Functional Foods -

Our news journalists report that additional information may be obtained by contacting M. Zhang, Minist Agr, Key Lab Agroprod Proc, Beijing 100193, People's Republic of China. Additional authors for this research include T.H. Mu and M.J. Sun (see also Antioxidants).

Keywords for this news article include: Asia, Antioxidants, Beijing, Peptides, Amino Acids, Protective Agents, Protein Hydrolysates, People's Republic of China

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Source: Life Science Weekly