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Biological characteristics, bioactive compounds, and antioxidant activities of off-season mulberry fruit.

ABSTRACT: To understand the yield and quality of off-season mulberry fruits, which are cultivated in open fields from autumn, the biological characteristics, bioactive compounds, and antioxidant activities of them were analyzed. Compared with mulberry fruits in normal season, the fruit length, fruit diameter, single fruit weight, fruit yield per meter strip, and the fruits yield per 667 m² are significantly lower. The moisture content and juice yield of off-season mulberry fruits are lower than the mulberry fruits in normal season; the pH and soluble solids are higher. The contents of mass fraction of crude protein, total sugar, reducing sugar, total acids, total anthocyanins, and total flavonoids decreased significantly in all batches of off-season mulberry fruits compared with those of normal season. Of off-season mulberry fruits, the contents of glucose, fructose and sucrose, expression, anthocyanin biosynthesis genes, and antioxidant capacity are significantly lower than those in normal season.

SUBMITTER: Liu P

PROVIDER: S-EPMC9667739 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Biological characteristics, bioactive compounds, and antioxidant activities of off-season mulberry fruit.

Liu Peigang P Zhu Yan Y Ye Jingjing J Lin Tianbao T Lv Zhiqiang Z Xu Zilong Z Xu Lushan L Chen Leyang L Wei Jia J

Frontiers in plant science 20221025

To understand the yield and quality of off-season mulberry fruits, which are cultivated in open fields from autumn, the biological characteristics, bioactive compounds, and antioxidant activities of them were analyzed. Compared with mulberry fruits in normal season, the fruit length, fruit diameter, single fruit weight, fruit yield per meter strip, and the fruits yield per 667 m<sup>2</sup> are significantly lower. The moisture content and juice yield of off-season mulberry fruits are lower than ...[more]

PMID: 36407578

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Project description:Chinese dwarf cherry (Cerasus humilis) is a wild fruit tree and medicinal plant endemic to China. Its fruits are rich in various bioactive compounds, such as flavonoids and carotenoids, which contribute greatly to their high antioxidant capacity. In this study, the contents of bioactive substances (chlorophyll, carotenoids, ascorbic acid, anthocyanin, total flavonoids, and total phenols), antioxidant capacities, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonicacid) (ABTS+) scavenging ability, and ferric-reducing antioxidant power (FRAP)) in differentially pigmented C. humilis fruits of four varieties were determined and compared. The results revealed that anthocyanin, total flavonoids and total phenols were the three main components responsible for the antioxidant activity of C. humilis fruits. 'Jinou No.1' fruits with dark red peel and red flesh had the highest contents of anthocyanin, total flavonoids, and total phenols, as well as the highest antioxidant capacities; 'Nongda No.5' fruits with yellow-green peel and yellow flesh had the highest contents of carotenoids and chlorophyll, while 'Nongda No.6' fruit had the highest ascorbic acid content. To further reveal the molecular mechanism underlying differences in the accumulation of carotenoids and flavonoids among differentially pigmented C. humilis fruits, the expression patterns of structural genes involved in the biosynthesis of the two compounds were investigated. Correlation analysis results revealed that the content of carotenoids in C. humilis fruits was very significantly positively correlated with the expression of the ChCHYB, ChZEP, ChVDE, ChNSY, ChCCD1, ChCCD4, ChNCED1, and ChNCED5 genes (p < 0.01) and significantly negatively correlated with the expression of ChZDS (p < 0.05). The anthocyanin content was very significantly positively correlated with ChCHS, ChFLS, and ChUFGT expression (p < 0.01). The total flavonoid content was very significantly positively correlated with the expression of ChCHS, ChUFGT, and ChC4H (p < 0.01) and significantly positively correlated with ChFLS expression (p < 0.05). This study can provide a basis for understanding the differences in the accumulation of bioactive substances, and is helpful for clarifying the mechanisms underlying the accumulation of various carotenoids and flavonoids among differentially pigmented C. humilis fruits.

Project description:BackgroundBergenia ciliata is a medicinal plant used for the treatment of diarrhea, vomiting, fever, cough, diabetes, cancer, pulmonary disorders and wound healing.MethodsIn this study, Bergenia ciliata crude extract, subfractions, and isolated compounds were evaluated for their antioxidant and anticholinesterase potential. The free radical scavenging capacities of the extracts determined using DPPH and ABTS assays. The anticholinesterase potentials were determined using acetylcholine esterase and butyryl choline esterase enzymes. To determine the phytochemical composition, the extracts were subjected to HPLC analysis and silica gel column isolation. Based on HPLC fingerprinting results, the ethyl acetate fraction was found to have more bioactive compounds and was therefore subjected to silica gel column isolation. As a result, three compounds; pyrogallol, rutin, and morin were isolated in the pure state. The structures of the isolated compounds were elucidated using spectroscopic techniques like 1H-NMR, IR and UV-Visible.ResultsThe crude extract showed maximum anticholinesterase (acetylcholinesterase = 90.22 ± 1.15% and butyrylcholinesterase = 88.22 ± 0.71%) and free radical scavenging (87.37 ± 2.45 and 83.50 ± 0.70% respectively against DPPH and ABTS radicals) potentials. The total phenolic contents (expressed as equivalent of gallic acid; mgGAE/g) were higher in ethyl acetate fraction (80.96 ± 1.74) followed by crude extract (70.65 ± 0.86) while the flavonoid contents (expressed as quercetin equivalent; mgQE/g) and were higher in crude extract (88.40 ± 1.12) followed by n-butanol fraction (60.10 ± 1.86). The isolated bioactive compounds pyrogallol, rutin, and morin were found active against ABTS and DPPH free radicals. Amongst them, pyrogallol was more active against both free radicals. Reasonable anticholinesterase activities were recorded for pyrogallol against selected enzymes.ConclusionThe extracts and isolated compounds showed antioxidant and acetylcholinesterase inhibitory potentials. It was concluded that this plant could be helpful in the treatment of oxidative stress and neurological disorders if used in the form of extracts.

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Biological characteristics, bioactive compounds, and antioxidant activities of off-season mulberry fruit.

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Biological characteristics, bioactive compounds, and antioxidant activities of off-season mulberry fruit.

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