Journal of Integrative Agriculture ›› 2017, Vol. 16 ›› Issue (11): 2632-2645.DOI: 10.1016/S2095-3119(16)61601-5

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  • 收稿日期:2016-11-01 出版日期:2017-11-20 发布日期:2017-11-03

Sweet potato and potato residual flours as potential nutritional and healthy food material

JU Dong, MU Tai-hua, SUN Hong-nan   

  1. Key Laboratory of Agro-Products Processing, Ministry of Agriculture/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China
  • Received:2016-11-01 Online:2017-11-20 Published:2017-11-03
  • Contact: Correspondence MU Tai-hua, Tel/Fax: +86-10-62815541, E-mail: mutaihua@126.com
  • Supported by:

    The research was supported by the National Key Research and Development Program of China (2017YFD0400401), the Public Welfare Industry (Agriculture) Research Project, China (201503001-2), and the earmarked foud for the China Agriculture Research System (CARS-10-B21).

Abstract:     In this study, the proximate composition, mineral content and amino acid composition of starch processing residues from 10 cultivars of sweet potato and 10 cultivars of potato were determined, and the nutritional and health-related values of these residues were investigated.  The residual flours contained 20.63–31.48 g and 17.14–28.57 g rich dietary fiber per 100 g dry weight for sweet potato and potato, respectively, as well as mineral elements, including potassium, ferrum, zinc and copper.  The highest limiting amino acid score (AAS) of the almost balanced amino acid composition were observed to be 71.07 and 57.96 for sweet potato and potato residues, respectively.  A grey relational analysis showed that the nutritional values of Jishu 4 at 0.7519 and LT-5 at 0.7281 were the highest among the sweet potato and potato residues, respectively.  The evaluation of the sweet potato/potato residues, the by-products of the starch industry, based on recommended daily intake (RDI) standards, indicated that the residues have potential nutritional and health-related food values. 

Key words:  sweet potato residue ,  potato residue ,  component analysis ,  comprehensive nutritional value ,  grey relational analysis