Study on Functional Properties of Pumpkin Powder

Abstract

Abstract: Pumpkin powder was produced by using neutral proteinase to hydrolyze pumpkin pulp and then freeze-drying,and pumpkin polysaccharides were extracted. In order to understand the hypotensive effect and potential antitumor effect of the pumpkin powder,its effects on the activities of ACE (angiotensin converting enzyme) and ALP (alkaline phosphatase) were investigated. The scavenging effect of the pumpkin powder was determined on hydroxl radical (·H),which is produced by Feton reaction,and its total reducing power was determined by FRAP method. The monosaccharide composition of the pumpkin polysaccharides was analyzed by paper chromatography method. The results showed that the pumpkin powder can inhibit the activities of ACE and ALP and has hypotensive effect and potential antitumor effect. The pumpkin polysaccharides have antioxidant activity,which are composed of galactose,glucose,arabinose and rhamnose.

Key words: pumpkin, ACE, ALP, polysaccharides, antioxidant activity

LI Xiao-Quan, HE Qun, LIAN Hui-Hui, WANG Qin. Study on Functional Properties of Pumpkin Powder[J]. FOOD SCIENCE, 2008, 29(10): 55-58.

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Study on Functional Properties of Pumpkin Powder

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