杭椒采收期内辣椒素类物质和维生素C的动态变化

Dynamic changes of capsaicinoids and vitamin C contents in Hangzhou pepper during the harvesting period

【目的】研究杭椒Capsicum annuum‘Hangzhou Jizhua’בJilin Zaojiao’果实辣椒素、维生素C等物质在采收期的动态变化,以确定最佳采收期。【方法】选取4个常见杭椒品种,采用高效液相色谱法分别测定开花后14、21、28、35、42、49、56 d采收的果实中辣椒素、二氢辣椒素和维生素C以及干物质质量分数。【结果】采收期内4个杭椒品种果实辣椒素类物质质量分数不同,品种间差异显著(P<0.05);维生素C质量分数和干物质相对含量随果实成熟度增加而升高。【结论】花后49 d是杭椒果实最佳采收期,此时果实成熟度好,辣椒素类物质、维生素C质量分数和干物质相对含量均较高。采收期内不同品种辣椒素类物质质量变化差异大,具体采收计划应综合种植品种、市场需求和供求关系等多方面因素考虑。

[Objective]This study is aimed to determine the dynamic changes of capsaicinoids,vitamin C and dry matter contents in the fruit of Hangzhou pepper(Capsicum annuum‘Hangzhou Jizhua’בJilin Zaojiao’)during the harvest period.[Method]Contents of capsaicin,dihydrocapsaicin,vitamin C and dry matter in the fruit of four common cultivars of Hangzhou pepper harvested at different times(14,21,28,35,42,49,56 days after flowering)were measured by HPLC.[Result]Content of capsaicinoids fluctuated during the harvest period and varied among four cultivars,while the contents of vitamin C and dry matter increased with fruit ripening.[Conclusion]Around 49 days after flowering is the best pepper harvest time in terms of fruit maturity,and the contents of capsaicinoids,vitamin C and dry matter.Since the dynamic changes of capsaicinoids content varied among cultivars,the optimum harvesting planning should take into consideration various factors such as pepper varieties,market demand and supply-demand relationship.