cqvip:Using‘Luotian chestnut'as the raw material,the content changes of resistant starch and main nutrients in the processed fruit were studied after taken common processing of high-temperature steaming of canned food,sand-mixed frying and cooking without shells,with the aim to find out the effects of different processing methods on the content changes of nutrients in chestnuts. The result showed that there were significant differences in the resistant starch contents by different processing methods. After processing,the retention degree of resistant starch was the lowest using the methods of sand-mixed frying,of 42. 42%,while the highest was found in canned chestnut products,of 93. 16%. Among the main nutrients,adding water and sugar would reduce content of resistant starch,while increasing the protein content would promote the retention of resistant starch retention. The changes in lipid content had no effect or not a single promoting or weakening effects on the content of resistant starch.
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