Project description:Kadsura spp. in the Schisandraceae family are woody vine plants, which produce edible red fruits that are rich in nutrients and antioxidant activities. Despite their valuable food applications, Kadsura spp. are only able to grow naturally in the forest, and reproduction handled by botanists is still in progress with a very low growth rate. Subsequently, Kadsura spp. were listed as endangered species by the International Union for Conservation of Nature and Natural Resources (IUCN) in 2011. Two different Kadsura spp., including Kadsura coccinea (Lem.) A.C. Sm. and Kadsura heteroclita (Roxb.) Craib, are mostly found in northern Thailand. These rare, wild fruits are unrecognizable to outsiders, and there have only been limited investigations into its biological properties. This study, therefore, aimed to comparatively investigate the phenolic profiles, antioxidant activities, and inhibitory activities against the key enzymes involved in diabetes (?-glucosidase and ?-amylase) and Alzheimer's disease (acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and beta-secretase 1 (BACE-1)) in different fruit parts (exocarp, mesocarp (edible part), seed, and core) of Kadsura coccinea (Lem.) A.C. Sm. and Kadsura heteroclita (Roxb.) Craib. The results suggested that Kadsura spp. extracts were rich in flavonol (quercetin), flavanone (naringenin), anthocyanidins (cyanidin and delphinidin), and anthocyanins (cyanidin 3-O-glucoside (kuromanin), cyanidin 3-O-galactoside (ideain), cyanidin 3-O-rutinoside (keracyanin), and cyanidin 3,5-di-O-glucoside (cyanin)). These flavonoids were found to be responsible for the high antioxidant activities and key enzyme inhibitions detected in Kadsura spp. extracts. The findings of the present study can support further development of Kadsura spp. as a potential source of phenolics and anti-oxidative agents with health benefits against diabetes and Alzheimer's disease. Besides, exocarp and the core of Kadsura spp. exhibited higher phenolic contents, antioxidant activities, and key enzyme inhibitory activities compared to the mesocarp and seeds, respectively. This information can promote the use of fruit parts other than the edible mesocarp for future food applications using Kadsura spp. rather than these being wasted.
Project description:The first complete chloroplast genome (cpDNA) sequence of Kadsura interior was determined from Illumina HiSeq pair-end sequencing data in this study. The cpDNA is 153,201 bp in length, contains a large single-copy region (LSC) of 85,774 bp and a small single-copy region (SSC) of 18,077 bp, which were separated by a pair of inverted repeats (IR) regions of 24,673 bp each. The genome contains 129 genes, including 85 protein-coding genes, 8 ribosomal RNA genes, and 37 transfer RNA genes. The overall GC content of the whole genome is 39.6%, . The further phylogenomic analysis showed that K. interior and Kadsura coccinea clustered in a clade in Schisandraceae family.
Project description:The first complete chloroplast genome (cpDNA) sequence of Kadsura ananosma was determined from Illumina HiSeq pair-end sequencing data in this study. The cpDNA is 145,903 bp in length, contains a large single-copy region (LSC) of 94,757 bp and a small single-copy region (SSC) of 18,042 bp, which were separated by a pair of inverted repeats (IR) regions of 16,552 bp. The genome contains 125 genes, including 82 protein-coding genes, 8 ribosomal RNA genes, and 35 transfer RNA genes. Further phylogenomic analysis showed that K. ananosma and Kadsura coccinea clustered in a clade in Schisandraceae family.
Project description:The first complete chloroplast genome (cpDNA) sequence of Kadsura heteroclita was determined from Illumina HiSeq pair-end sequencing data in this study. The cpDNA is 153,289 bp in length, contains a large single copy region (LSC) of 85,774 bp and a small single copy region (SSC) of 18,201 bp, which were separated by a pair of inverted repeats (IR) regions of 24,657 bp. The genome contains 129 genes, including 84 protein-coding genes, eight ribosomal RNA genes, and 37 transfer RNA genes. Further phylogenomic analysis showed that K. heteroclita and K. interior clustered in a clade in Schisandraceae family.
Project description:As part of our continual efforts to exploit 'Tujia Ethnomedicine' for their pharmacophoric functionalities, we herein investigated Kadsura heteroclita collected from a deep Wulin mountain area in northern Hunan province. The current study resulted in the isolation of three new sesquiterpenes: 6?,9?,15-trihydroxycadinan-4-en-3-one (1), (+)-3,11,12-trihydroxycalamenene (2), (-)-3,10,11,12-tetrahydroxy-calamenene (3), along with four known sesquiterpenes (4-7), and a cytochalasin H (8). Their chemical structures were elucidated by 1D-, and 2D-NMR spectroscopy, and HRESI-MS, CD spectrometry. The antioxidant, and cytotoxic activities of the compounds were evaluated. Compound 8 exhibited a strong antioxidant effect with an IC50 value of 3.67 µM on isolated human polymorphonuclear cells or neutrophils.