Study on Extraction of Brown Pigment From Chestnut Shells and Its Physicochemical Properties

Abstract

Abstract: A new food grade brown pigment extracted from chestnut shells had been studied. The total yield was18. 7% when extracted with 65% content alcohol solution. The results of physicochemical tests showed that the largest absorption spectrum of this pigment was 470nm. It was a kind of water dissolvable pigment, and had certain light and heat stability. Its color was changed by Fe3+ , Al3+ and decreased slightly by glucose, bub not harmfully affected by K+, Cu2 +, Mg2 + and Zn2 +.

Key words: Chestnut shells , Brown pigment , Stability

CHEN Xin, CHEN Chun-Xin, ZHANG Jun-Min, CHEN Mei-Fen. Study on Extraction of Brown Pigment From Chestnut Shells and Its Physicochemical Properties[J]. FOOD SCIENCE, 2002, 23(11): 52-54.

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Study on Extraction of Brown Pigment From Chestnut Shells and Its Physicochemical Properties

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