叶子花（紫茉莉科）花朵的颜色与生物活性

Color versus bioactivity in the flowers of Bougainvillea spectabilis (Nyctaginaceae).

作者信息

Ali Muhammad Shaiq, Ibrahim Syed Amir, Ahmed Farman, Pervez Muhammad Kashif

机构信息

H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan.

出版信息

Nat Prod Res. 2005 Jan;19(1):1-5. doi: 10.1080/14786410310001630609.

DOI:10.1080/14786410310001630609

PMID:15700638

Abstract

The methanolic extracts of Bougainvillea spectabilis (Nyctaginaceae) flowers (five different colors) were screened biologically by performing four bioassays: antibacterial, antifungal, brine shrimp lethality and phytotoxicity. It was observed that the methanolic extract of white flowers was the most biologically active among all tested extracts. The extracts of white, orange and shocking pink flowers inhibit, while the extracts of red and violet flowers promote, the growth of Lemna plants. The extract of white flowers also exhibits toxicity against shrimp larvae with a LD50 value of 33.5627 microg/mL. However, none of the tested samples gave positive responses against any tested fungi.

摘要

对叶子花属（紫茉莉科）五种不同颜色花朵的甲醇提取物进行了四项生物测定，以此对其进行生物学筛选：抗菌、抗真菌、卤虫致死性和植物毒性测定。结果发现，白花的甲醇提取物在所有受试提取物中生物活性最强。白色、橙色和深粉色花朵的提取物对浮萍植物的生长有抑制作用，而红色和紫色花朵的提取物则有促进作用。白花提取物对虾幼虫也具有毒性，其半数致死剂量（LD50）值为33.5627微克/毫升。然而，所有受试样品对任何受试真菌均未产生阳性反应。