Abstract
Adenia viridiflora Craib. is an indigenous edible plant that became an endangered species due to limited consumption of the local population with unknown reproduction and growth conditions. The plant is used as a traditional herb; however, its health applications lack scientific-based evidence. A. viridiflora Craib. plant parts (old leaves and young shoots) from four areas as Kamphaeng Phet (KP), Muang Nakhon Ratchasima (MN), Pakchong Nakhon Ratchasima (PN), and Uthai Thani (UT) origins were investigated for phenolic compositions and in vitro health properties through the inhibition of key enzymes relevant to obesity (lipase), diabetes (α-glucosidase and dipeptidyl peptidase-IV), Alzheimer’s disease (cholinesterases and β-secretase), and hypertension (angiotensin-converting enzyme). Phenolics including p-coumaric acid, sinapic acid, naringenin, and apigenin were detected in old leaves and young shoots in all plant origins. Old leaves exhibited higher total phenolic contents (TPCs) and total flavonoid contents (TFCs), leading to higher enzyme inhibitory activities than young shoots. Besides, PN and MN with higher TPCs and TFCs tended to exhibit greater enzyme inhibitory activities than others. These results will be useful to promote this plant as a healthy food with valuable medicinal capacities to support its consumption and agricultural stimulation, leading to sustainable conservation of this endangered species.
Highlights
Adenia viridiflora Craib. in the family Passifloraceae is a wild indigenous climbing plant that grows in mixed deciduous and deciduous dipterocarp forest areas in Northeastern Thailand
Enzyme inhibitory activities were analyzed using extracts of both old leaves, and young shoots of the four originated A. viridiflora Craib. plants to investigate the possibility that these extracts could control the occurrence of obesity, diabetes (α-glucosidase and dipeptidyl peptidase-IV), Alzheimer’s disease, and hypertension through inhibition of the key enzymes
Adenia viridiflora Craib. is a wild indigenous climbing plant found in Northeastern Thailand that is consumed by some locals without any scientific-based health evidence
Summary
Adenia viridiflora Craib. (or Pak E-noon in Thai) in the family Passifloraceae is a wild indigenous climbing plant that grows in mixed deciduous and deciduous dipterocarp forest areas in Northeastern Thailand. Anti-plasmodial activity on Plasmodium falciparum was reported in A. gummifera [14] This information suggested that A. viridiflora Craib. Due to the lack of information on cultivation and health-promoting bioactivities, this research investigated the effects of edible plant parts (old leaves and young shoots) on phenolic compositions, antioxidant activities, and in vitro health properties of four originated A. viridiflora Craib. Due to the limited scientific-based evidence on health properties of A. viridiflora Craib., phenolic compositions, antioxidant activities, and inhibition of the key enzymes relevant to the occurrence of obesity (lipase), diabetes (α-glucosidase and dipeptidyl peptidase-IV (DPP-IV)), hypertension (angiotensin-converting enzyme (ACE)), and Alzheimer’s disease (acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and β-secretase (BACE-1)) were investigated. Information from this research can lead to sustainable conservation and utilization of A. viridiflora Craib. to circumvent its extinction
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