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Nutritive evaluation of a non-conventional leafy vegetable (Pereskia aculeata Miller).

Abstract

Pereskia aculeata Miller is a native cactus that can be found in Brazil and is called 'ora-pro-nobis' (OPN). Many people from poor communities consume the dark green leaves of OPN as a vegetable. The objective of the present work was to evaluate the nutritional components in terms of proximate composition, minerals, vitamins, protein content and their in vitro protein digestibility. OPN leaves showed remarkable levels of total dietary fiber (39.1% dry basis), minerals (calcium, magnesium, manganese and zinc) and vitamins (vitamin A, vitamin C and folic acid). Among amino acids, tryptophan was the most abundant (20.5% of the total amino acids) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis showed small peptides, inferior to 6.5 kDa, and four major bands (61 kDa, 53 kDa, 33 kDa, and 15 kDa). The protein digestibility corrected amino acid score showed the lowest value of sulfur-amino acids (Met+Cys). OPN leaves could be considered a good source of minerals, vitamins and amino acids, and may serve as a potential functional ingredient.

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  • Publisher Full Text
  • Authors

    Takeiti CY, Antonio GC, Motta EM, Collares-Queiroz FP, Park KJ

    Institution

    School of Agricultural Engineering, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil.

    Source

    International journal of food sciences and nutrition 60 Suppl 1: 2009 pg 148-60

    MeSH

    Amino Acids
    Brazil
    Cactaceae
    Dietary Fiber
    Dietary Proteins
    Micronutrients
    Minerals
    Molecular Weight
    Nutritive Value
    Peptides
    Plant Leaves
    Vegetables

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    19468927