西梅“女神”“法兰西”果实品质比较研究

Comparative Study on Fruit Quality of Prunus domestica“Empress”and“France”

对新疆喀什地区伽师县"女神"和"法兰西"2个品种西梅品质进行研究。以固形物含量、质构特性、糖酸组分、抗氧化能力和色差值为指标分析两种西梅果皮和果肉的品质差异和加工适用性。结果表明:不同西梅品种间果实主要品质存在较大差异,同一品种其果皮和果肉品质也存在较大差异,"女神"品种固形物含量和糖酸组分含量均高于"法兰西"品种。通过抗氧化能力比较得知西梅"女神"多酚提取物清除DPPH自由基、·OH和O2^-·的能力强于西梅"法兰西"。西梅"女神"多酚提取物对DPPH自由基、·OH和O2^-·的清除率的IC50值分别为0.65、0.71、1.31 mg/mL;西梅"法兰西"多酚提取物对DPPH自由基、·OH和O2^-·的清除率的IC50值分别为0.71、0.84、1.62 mg/mL。在质构特性上",女神"品种的西梅较适合进行深加工或适合于对咀嚼性要求高的人群食用,而"法兰西"品种硬度低质软,口感酸甜较适合鲜食。

The quality of two varieties of prune in Jiashi County,Kashi,Xinjiang were studied.The quality differences of two kinds of plum peel and pulp were analyzed by solid content,texture characteristics,sugar acid components,antioxidant ability and color gamut as indexes.The results showed that there were significant differences in fruit quality among different varieties of prune.The quality of the plum peel and pulp of the same variety were also significantly different."Empress"variety had higher solid content,sugar acid components and total flavonoids than"France"cultivar.The free radical scavenging capacity of polyphenols from prune"Empress"were stronger than that of prune"France".The IC50 values of DPPH free radical,·OH and O2^-·scavenging rates of polyphenols from prune"Empress"were 0.65,0.71 and 1.31 mg/m L,respectively.The IC50 values of DPPH free radical,·OH and O2^-·scavenging rates of polyphenols from prune"France"were 0.71,0.84 and 1.62 mg/m L,respectively.In the texture characteristics,"Empress"variety was more suitable for deep processing or for people with high chewing requirements.However,"France"variety had low hardness and soft texture.Sweet and sour taste of that was more suitable for fresh food.