Optimization of complex biopreservatives to improve quality preservation of citrus reticulata by response surface methodology

Used the Nanfeng tangerines as the raw material,based on single factor experiment results,optimize complex preservatives consisting of the oil of ginger,tea polyphenols,chitosans and Sucrose fatty acid ester using response surface methodology to improve quality preservation of Nanfeng tangerines.The results showed that,the optimal complex preservatives consist was ginger oil 0.15%,tea polyphenols 1.60%,chitosans 2.25% and Sucrose fatty acid ester 0.65%.In the optima conditions,tangerine storage after 90 days under 25 ℃,the rot index of 5.09%,the water loss rate was 3.40%,VCcontent was 510.56 mg / kg.The complex biopreservatives had the advantages of health,environmental protection and high efficiency,and was expected to be used in the industrial production of Citrus storage and preservation.