Comparative analysis of storage characters on main breeds of spinach in Beijing

Five typical varieties were selected to study the storage characteristics in different varieties of spinach in the Beijing area.Spinach were King of disease-resistant, Nongda bo's miscellaneous 1, Nongda bo's miscellaneous 10, Pioneer, Japanese big leaf, and the quality change had been studied in the storage period.Indices were sensory evaluation, the weightlessness rate, conductivity, vitamin C content, chlorophyll content, activity of peroxidase, polyphenol oxidase activity. Regard 5 score as the commercial limit, on the 11 th day, only Nongda bo's miscellaneous' s sensory evaluation was not less than five points, Japanese big leaf's sensory score was 5 on the 7th day and lost the commercial, Japanese big leaf's weightlessness rate was maximum, reached up to 23.14%, and the Nongda bo's miscellaneous 1 's weightlessness rate was minimum, at 10.78%. The vitamin C content of Japanese big leaf reduced mostly, and was 75.26%.The vitamin C content of Nongda bo's miscellaneous 1 reduced least, as much as 52.74%. Comprehensive evaluation of various indicators, five different varieties of spinach were resistant to storage quality in the order of: Nongda bo's miscellaneous 1 > Nongda bo's miscellaneous 10 > Japanese big leaf > King of disease-resistant > Pioneer.