Product Development And Application Of Peach Gum And Evaluation Of Its Hypoglycemic Effect

Backgrounds:Peach gum is a kind of colloidal substance secreted from the bark of rose plants such as peach or mountain peach.There are abundant resources in the hills and mountainous areas of China.According to the investigation,the annual output of peach gum in China can reach 10 billion tons.In coastal areas of China,there is a dietary habit of eating raw peach gum.The main component of peach gum is peach gum polysaccharide.Because of insoluble in water,the development and application of peach gum products are limited and the waste of peach gum resources is very serious.In order to fully develop and apply peach gum resources,we analyzed the main nutrients of suizhou peach gum in our province,and made full use of the characteristics of peach gum rich in polysaccharides and dietary fiber to develop related products,improve the demand for deep processing.It provides the basis for the comprehensive development and utilization of peach gum resources.Methods:(1)Using the standard method to detect the main components of peach gum from Suizhou in Hubei province.The peach gum polysaccharide was extracted from peach gum by water extraction and alcohol precipitation method,and the protein was removed by Sevage method.The content and molecular weight of peach gum polysaccharide were determined by phenol-sulfuric acid method and high performance gel permeation chromatography,respectively.(2)Using the original peach gum powder and low gluten flour as raw material,to develop the best formula of peach gum biscuit.(3)Apply fresh strawberries with different concentrations of peach gum solution to explore the fresh-keeping effect of peach gum solution coating.(4)The hypoglycemic effects of peach gum and peach gum polysaccharide were studied in vivo,to provide theoretical basis for the development and application of peach gum.Results:(1)The main nutritional components of Suizhou peach gum in Hubei province are:peach gum polysaccharide 66.09%,water 12.89%,ash 0.48%,protein 0.44%,other dietary fiber 19.16%.The purity of peach gum polysaccharide was 88.6%;and the average molecular weight(Mw)of peach gum polysaccharide was 9.42×10~6.(2)The best formula of peach gum leisure nutrition biscuit is:the low gluten flour100g,peach gum powder 15g,butter 25g,white granulated sugar powder 35g,baking soda0.5g,salt 0.3g.The peach gum biscuits are crisp,good in texture and have peach gum flavor.(3)Peach gum is rich in polysaccharides,can be used as a coating agent for fruit and vegetable preservation:the solubility of peach gum in water bath heating conditions is not high,and 5%peach gum solution is more viscous;the coating of 1%,2%and 5%peach gum solution can keep fresh and prolong the storage period of strawberry.Combined with sensory quality,2%peach gum solution coating can be applied to strawberry preservation.(4)The peach gum polysaccharide intervention had a better hypoglycemic effect on STZ-induced diabetic mouse model than the original peach gum intervention.Peach gum polysaccharide could reduce the blood glucose of diabetic mice by 32.6%,while the original peach gum only reduced the blood glucose of diabetic mice by 9%.However,the extraction and purification of peach gum polysaccharide is very time-consuming and may require the use of a large number of chemical reagents to pollute the environment,so the industrial application of peach gum polysaccharide still faces difficulties.To sum up,we make full use of the characteristics of peach gum rich in polysaccharides and dietary fiber,develop a kind of crispy peach gum biscuit formula,try to apply peach gum solution coating to keep fresh,and discuss the effect of peach gum and peach gum polysaccharide on hypoglycemic effect in vivo in this paper.The development and application of peach gum have broad space.