Journal
FARADAY DISCUSSIONS
Volume 202, Issue -, Pages 31-42Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7fd00035a
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- Department of Chemistry
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Mango peel is the major by-product of mango processing, and compromises 7-24% of the total mango weight. In this study, pectin was extracted from mango peel waste by using subcritical water extraction (SWE) in the absence of mineral acid. A highest yield of 18.34% was achieved from the Kesar variety and the pectin was characterised using ATR-IR spectroscopy, TGA and C-13 solid-state NMR spectroscopy to confirm the structure. The degree of esterification (DE) of the pectin was analysed with both titrimetry and C-13 solid-state NMR spectroscopy, and a high DE (> 70%) was observed for all three varieties (Keitt, Sindhri and Kesar). This is the first report on acid-free subcritical water extraction of pectin from mango peel, which provides a green route for the valorisation of mango peel waste and contributes to a source of biobased materials and chemicals for a sustainable 21st century.
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