Dynamic changes in flavonoid, phenolic, and polysaccharide contents in leaves and fruits of sea buckthorn during the growing season in southeastern Tibet plateau

Yang, Hong; Yang, Shihan; Chen, Xiaoqiang; Zhang, Jinshan; Zhang, Ying

doi:10.1016/j.scienta.2022.111497

Cited by 10 publications

(7 citation statements)

References 29 publications

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“…Strong positive correlation was found in TPC, TFC, DPPH and ABTS with the correlation coefficient ranging from 0.875 to 0.969 (Supplementary Table S1). These results showed that the higher the content of bioactive ingredients, the stronger the antioxidant activity (Yang et al, 2023). A previous study suggested that polyphenols were the major bioactive components in propolis to exert antioxidant activity (Jiang et al, 2020a).…”

Section: E Ects Of the Liquid-to-solid Ratio On The Extraction Yield ...mentioning

confidence: 69%

Ultrasound-assisted extraction of polyphenols from Chinese propolis

Peng

Zhu

et al. 2023

Front. Sustain. Food Syst.

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IntroductionPropolis is a beneficial bioactive food with rich polyphenols content. Nowadays, an increasing interest is attracted to the extraction of polyphenols from raw propolis. This study utilized the novel ultrasound-assisted approach for polyphenol extraction from Chinese propolis, aiming to improve its extraction yield and reveal the relevant mechanisms via extraction kinetic study as well as the compositional and structural analysis.MethodsThe optimum ultrasound-assisted extraction conditions were optimized according to the total phenolic content and total flavonoids content. Compositional and structural analysis were conducted using high performance liquid chromatography-quadrupole-time of flight tandem mass spectrometry, high-performance liquid chromatography, Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM).Results and discussionThe optimum ultrasound-assisted extraction conditions were as follows: ratio of liquid to solid, 60:1; ultrasound power, 135 W; ultrasound duration, 20 min. Under the optimum conditions, the antioxidant activities of the extract were increased by 95.55% and 64.46% by 2,2-diphenyl-1-picrylhydrazyl radical scavenging ability assay and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging ability assay, respectively, compared to those obtained by traditional maceration. The second-order kinetics model was employed to study the extraction process; it was found that ultrasound significantly accelerated the extraction of propolis and increased the maximum extraction volume of phenolic compounds. The qualitative and quantitative analysis of polyphenol compositions showed that ultrasound did not change the polyphenol types in the extract but it significantly improved the contents of various flavonoids and phenolic acids such as galangin, chrysin, pinocembrin, pinobanksin and isoferulic acid. Likewise, the FT-IR analysis indicated that the types of functional groups were similar in the two extracts. The SEM analysis revealed that the ultrasound-assisted extraction enhanced the contact areas between propolis and ethanol by breaking down the propolis particles and eroding the propolis surface.

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Section: E Ects Of the Liquid-to-solid Ratio On The Extraction Yield ...mentioning

confidence: 69%

Ultrasound-assisted extraction of polyphenols from Chinese propolis

Peng

Zhu

et al. 2023

Front. Sustain. Food Syst.

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“…Despite the absence of yield comparisons of sea buckthorn polysaccharides across different growing regions, previous research has demonstrated that the accumulation of sea buckthorn polysaccharides, derived from both the fruit and leaf, is influenced by harvesting time and meteorological conditions. Specifically, it has been found that the optimal harvesting time for sea buckthorn is between October and November, while precipitation is negatively associated with polysaccharide content [41] .…”

Section: Extraction Methodsmentioning

confidence: 99%

“…Zhao et al [65] found that sea buckthorn polysaccharides exerted anti-oxidative effects by regulating Nrf2/Keap1 pathway in Alzheimer's disease mice, and significantly enhanced the activities of SOD and GSH-Px and reduced oxidative stress. Yang et al [41] found that sea buckthorn polysaccharides from the southeastern Tibet plateau region had significant antioxidant activity. Their leaf polysaccharide antioxidant activity was higher than fruit polysaccharides in all months by measuring the DPPH free radical scavenging capacity, ferric ion reducing antioxidant power, and total radical trapping antioxidant parameter.…”

Section: Antioxidant Activitymentioning

confidence: 99%

Prospects of sea buckthorn ( Hippophae rhamnoides L.) polysaccharides: preparation, structural characterization, and bioactivities diversity

Shi,

Wu,

Han

et al. 2024

Food Science and Human Wellness

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Sea buckthorn (Hippophae rhamnoides L.) is a natural homologous substance of medicine and food. Polysaccharide, as one of its primary active components, has very superior biological activity and can be used as a dietary supplement for functional foods, with good commercial prospects. Although initial progress has been made in the study of sea buckthorn polysaccharides, related studies have been fragmented and lacked systematic and generalization. This manuscript presents a critical analysis and systematic summary of the extraction and purification methods, structural characterization and physicochemical properties, biological activity and potential mechanisms, and structure-activity relationships of sea buckthorn polysaccharides. Accumulating evidence has indicated that sea buckthorn polysaccharides, which were widely prepared by water extraction and column chromatography purifications, exhibited exhibit superior biological activities in vitro and in vivo, including antioxidant, immunomodulatory, anti-inflammatory, hepatorenal protective, antibacterial, antiviral, and prebiotic activities. After analysis, it was concluded that there is a correlation between the relevant activities of sea buckthorn polysaccharides and that the structure of sea buckthorn polysaccharides has a great influence on their biological activity. We reviewed the challenges and limitations of sea buckthorn polysaccharides, summarized the critical aspects, and provided suggestions for potential breakthroughs in the research and application of sea buckthorn polysaccharide.

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“…Sea buckthorn is indeed rich in many bioactive phytochemicals, but the contents of the fruit pulp, seeds, and leaves vary considerably. This variation can be attributed to species, ripening time, cultivar, harvest date, influence of year, as well as their interactions, as noted for, e.g., content of acids, sugars and sugar alcohols [100], carotenoids [101], tocopherols [102]), and total phenolic compounds [103]. Also, location [104], orchard management, and sample treatment can influence the reported results, and therefore published data are not easily compared.…”

Section: Chemical Contentsmentioning

confidence: 99%

The Systematics, Reproductive Biology, Biochemistry, and Breeding of Sea Buckthorn—A Review

Nybom,

Ruan,

Rumpunen

2023

Genes

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Both the fruit flesh and seeds of sea buckthorn have multiple uses for medicinal and culinary purposes, including the valuable market for supplementary health foods. Bioactive compounds, such as essential amino acids, vitamins B, C, and E, carotenoids, polyphenols, ursolic acid, unsaturated fatty acids, and other active substances, are now being analyzed in detail for their medicinal properties. Domestication with commercial orchards and processing plants is undertaken in many countries, but there is a large need for improved plant material with high yield, tolerance to environmental stress, diseases, and pests, suitability for efficient harvesting methods, and high contents of compounds that have medicinal and/or culinary values. Applied breeding is based mainly on directed crosses between different subspecies of Hippophae rhamnoides. DNA markers have been applied to analyses of systematics and population genetics as well as for the discrimination of cultivars, but very few DNA markers have as yet been developed for use in selection and breeding. Several key genes in important metabolic pathways have, however, been identified, and four genomes have recently been sequenced.

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Dynamic changes in flavonoid, phenolic, and polysaccharide contents in leaves and fruits of sea buckthorn during the growing season in southeastern Tibet plateau

Cited by 10 publications

References 29 publications

Ultrasound-assisted extraction of polyphenols from Chinese propolis

Ultrasound-assisted extraction of polyphenols from Chinese propolis

Prospects of sea buckthorn ( Hippophae rhamnoides L.) polysaccharides: preparation, structural characterization, and bioactivities diversity

The Systematics, Reproductive Biology, Biochemistry, and Breeding of Sea Buckthorn—A Review

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