Hydrolysis of citrus peel naringin by recombinant α-L-rhamnosidase from Clostridium stercorarium

Aneet Kaur, Satbir Singh, Ram Singh, Wolfgang Schwarz, Munish Puri

    Research output: Contribution to journalArticle

    29 Citations (Scopus)

    Abstract

    The citrus fruit processing industry generates substantial quantities of waste rich in glycosylated phenolic substances such as naringin, which are a valuable natural source of polyphenols as well as L-rhamnopyranose. Naringin is the major polyphenol in bitter orange peel and its hydrolysis by α-L-rhamnosidase (EC 3.2.1.40) catalyzes the cleavage of the terminal rhamnosyl groups to form prunin and rhamnose. In this work, a recombinant α-L-rhamnosidase from C. stercorarium was shown to be suitable for narigin hydrolysis. The recombinant rhamnosidase was found to be relatively stable at 60°C, and a residual activity close to 50% after 180 min of incubation was demonstrated. The purified enzyme established hydrolysis of naringin extracted from citrus peel waste (CPW). The result indicated that recombinant α-L-rhamnosidase has industrial applicability and is an interesting candidate for producing rhamnose from citrus peel.

    Original languageEnglish
    Pages (from-to)1419-1422
    Number of pages4
    JournalJournal of Chemical Technology and Biotechnology
    Volume85
    Issue number10
    DOIs
    Publication statusPublished - Oct 2010

    Keywords

    • Citrus peel waste
    • Clostridium stercorarium
    • Naringin
    • Recombinant rhamnosidase
    • Rhamnose

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