两种可食用玫瑰生物碱代谢物差异分析

以云南滇红玫瑰(ZY)与墨红玫瑰(DH)两种云南主要的食用花卉品种为研究对象,采用超高效液相色谱-串联质谱(UPLC-MS/MS)方法比较两种玫瑰花次生代谢产物的差异性。结果表明,两种花瓣中共检测到82种代谢产物,包括55种氨基酸及其衍生物(67.07%)、16种生物碱(19.51%)、7种酚胺(8.54%)、4种吲哚类生物碱(4.88%),其中滇红玫瑰中谷胱甘肽含量是墨红玫瑰的26.35倍,具有较强的抗氧化能力;而L-天冬酰胺和S-(5'-腺苷)-L-高半胱氨酸却是墨红玫瑰中特有的物质,具有显著的降血压作用。与墨红玫瑰相比,滇红玫瑰15种差异代谢物显著下调,表明墨红玫瑰较滇红玫瑰有较高的营养保健功能,而滇红玫瑰高表达成分使其具有更强的抗氧化能力。

Analysis on alkaloids metabolites of two edible roses

Rosa gallica L. cv. Dianhong (ZY) rose and Rosa chinensis Jacq. cv. Crimson Glory (DH) are the main edible rose varieties in Yunnan. In this research, the UPLC-MS/MS method was used to detect the secondary metabolites of these two types of roses. The results showed that a total of 82 metabolites were detected in the two petals, including 55 kinds of amino acids and its derivatives (67.07%), 16 kinds of alkaloids (19.51%), 7 kinds of phenolamine (8.54%), 4 kinds of plumerane (4.88%). Glutathione in ZY was 26.35 times higher than that in DH, which had stronger antioxidant capacity. However, L-asparagine and S-(5'-adenosy)-L-homocysteine were unique substances in DH, which had a significant hypotensive effect. Compared with the DH, 15 metabolites were significantly down-regulated in ZY, which indicated that DH had more nutrition and healthcare functional substances, meanwhile, the unique ingredients of ZY made it have stronger antioxidant capacity.