Wan Huihua, Yu Chao, Han Yu, Guo Xuelian, Ahmad Sagheer, Tang Aoying, Wang Jia, Cheng Tangren, Pan Huitang, Zhang Qixiang
Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture , Beijing Forestry University , Beijing , 100083 , China.
Beijing Advanced Innovation Center for Tree Breeding by Molecular Design , Beijing Forestry University , Beijing , 100083 , China.
J Agric Food Chem. 2018 Apr 25;66(16):4171-4181. doi: 10.1021/acs.jafc.8b01509. Epub 2018 Apr 11.
Rose flowers have received increasing interest as rich sources of bioactive compounds. The composition of flavonols and carotenoids in yellow petals of Rosa 'Sun City' was determined by high-performance liquid chromatography coupled with photodiode array and mass spectrometric detectors (HPLC-PDA-MS). In total, 19 flavonols and 16 carotenoids were identified, some of which were first discovered in rose petals. Significant changes were observed in their profiles during seven blooming stages. Total flavonol contents showed the highest levels at stage 2 (S2; 1152.29 μg/g, FW). Kaempferol 7- O-glucoside and kaempferol 3- O-rhamnoside were the predominant individual flavonols. Total carotenoid concentration was highest at S4 (142.71 μg/g, FW). Violaxanthins with different geometrical configurations appeared as the major carotenoids across all blooming stages. These results indicated that 'Sun City' petals are rich sources of flavonols and carotenoids. Moreover, it is important to choose the appropriate harvest time on the basis of the targeted compounds.
玫瑰花朵作为生物活性化合物的丰富来源，受到了越来越多的关注。采用高效液相色谱-光电二极管阵列-质谱联用仪（HPLC-PDA-MS）测定了‘太阳城’玫瑰黄色花瓣中的黄酮醇和类胡萝卜素组成。共鉴定出19种黄酮醇和16种类胡萝卜素，其中一些是首次在玫瑰花瓣中发现的。在七个开花阶段观察到它们的含量有显著变化。总黄酮醇含量在第2阶段（S2）最高（1152.29μg/g，鲜重）。山奈酚7-O-葡萄糖苷和山奈酚3-O-鼠李糖苷是主要的黄酮醇单体。总类胡萝卜素浓度在S4最高（142.71μg/g，鲜重）。不同几何构型的紫黄质在所有开花阶段都是主要的类胡萝卜素。这些结果表明，‘太阳城’花瓣富含黄酮醇和类胡萝卜素。此外，根据目标化合物选择合适的采收时间很重要。
