Passiflora quadrangularis L. belongs to the family Passifloraceae which bears larger fruit with edible juicy mesocarp and pulp known as a good source of phytochemicals. Cultivation and plant management practices are known to influence the phytochemical compositions of agricultural produce. This study aimed to examine the influence of the cultivation practices on the antioxidant activities and secondary metabolites of the organically and conventionally grown P. quadrangularis. Findings revealed organically treated P. quadrangularis plants showed enhancement in their antioxidant properties and secondary metabolites profiles. Among the plant parts, leaves of P. quadrangularis grown organically possessed higher antioxidant activities compared to the conventional in all assays evaluated. The antioxidant activities in the edible parts of the P. quadrangularis fruit have also been enhanced through organic cultivation with significantly higher total phenolic content and DPPH in mesocarp, and the pulp showed higher total flavonoid content, DPPH and FRAP. This observation is supported by a higher level of vitamins and secondary metabolites in the samples. The secondary metabolites profile showed mesocarps were phenolic rich, the pulps were flavonoids rich while leaves showed good composition of phenolics, flavonoids and terpenoids with outstanding antioxidant activities. The common secondary metabolites for organically produced P. quadrangularis in different plant parts include 2-isopropyl-3-methoxycinnamic acid (mesocarp and pulp), myricetin isomers (pulp and leaves), and malvidin-3-O-arabinoside isomers (pulp and leaves). This study confirmed that organic cultivated P. quadrangularis possessed higher antioxidant activities contributed by its vitamins and secondary metabolites.

中文翻译：

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有机栽培实践增强了巨型西番莲 (Passiflora quadrangularis L.) 的抗氧化活性和次生代谢产物。

Passiflora quadrangularis L. 属于西番莲科，果实较大，果肉多汁，果肉多汁，是植物化学物质的良好来源。众所周知，栽培和植物管理实践会影响农产品的植物化学成分。本研究旨在检查栽培实践对有机和常规种植的四边形假单胞菌的抗氧化活性和次生代谢物的影响。结果表明，有机处理的 P. quadrangularis 植物的抗氧化特性和次生代谢产物谱有所增强。在植物部分中，在所有评估的测定中，与常规植物相比，有机生长的 P. quadrangularis 的叶子具有更高的抗氧化活性。P. 可食部分的抗氧化活性。quadrangularis 果实也通过有机栽培得到增强，中果皮的总酚含量和 DPPH 显着提高，果肉显示出更高的总黄酮含量、DPPH 和 FRAP。样品中较高水平的维生素和次生代谢物支持了这一观察结果。次生代谢产物谱显示中果皮富含酚类物质，果肉富含黄酮类化合物，而叶子则显示出良好的酚类、黄酮类和萜类化合物组成，具有出色的抗氧化活性。在不同植物部位有机生产的四边形假单胞菌的常见次生代谢物包括 2-异丙基-3-甲氧基肉桂酸（中果皮和果肉）、杨梅素异构体（果肉和叶）和 Malvidin-3-O-阿拉伯糖苷异构体（果肉和叶） ）。该研究证实，有机栽培的 P.