Dioscorea saponin transforms the structure of truffle exo-polysaccharide and enhances its antioxidant activity

Liu, Xiaocui; Zhang, Zhicai; Xu, Ling; Shi, Wenjing; Sun, Quanshan; Ding, Chang; Zheng, Huihua; Wang, Feng

doi:10.1016/j.lwt.2020.109417

Cited by 7 publications

(6 citation statements)

References 41 publications

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“…(2020) revealed that the fruit polysaccharides of T. panzhihuanense (TPZ‐NP) and Tuber pseudoexcavatum (TPD‐NP) consisted of Rha, Man, Glc, and Gal. HPLC analysis of the TP1 polysaccharide from TMP showed that it was composed of Man, Rha, and Glc (Liu et al., 2020). Although many different polysaccharides have been obtained from truffles, their monosaccharide composition usually consists of Rha, Man, and Glc at different molar ratios (G. J. Chen et al., 2016; X. L. Li et al., 2020; J. Wang et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

“…According to the correlative references, the signals at δ 1.20/16.55 ppm (1.21/16.56 ppm) denoted the methyl proton of Rha; δ 5.32/99.60 ppm (5.33/99.57 ppm) and 5.15/100.54 ppm (5.16/100.46 ppm) signified α‐D‐Glc (Bai et al., 2020; Liu et al., 2020); δ 4.57/95.72 ppm (4.57/95.67 ppm) and 5.01/102.13 ppm (5.01/102.10 ppm) represented α‐D‐Man; δ 5.15/91.82 ppm (5.15/91.98 ppm) denoted β‐ d ‐Man, respectively (Pan et al., 2020; Tian et al., 2021); and δ 5.05/98.03 ppm (5.05/97.97 ppm) represented α‐ l ‐Rha (Bai et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

“…X. L. Li et al (2020) revealed that the fruit polysaccharides of T. panzhihuanense (TPZ-NP) and Tuber pseudoexcavatum (TPD-NP) consisted of Rha, Man, Glc, and Gal. HPLC analysis of the TP1 polysaccharide from TMP showed that it was com-posed of Man, Rha, and Glc (Liu et al, 2020). Although many different polysaccharides have been obtained from truffles, their monosaccharide composition usually consists of Rha, Man, and Glc at different molar ratios (G. J. Chen et al, 2016; X. L. Li et al, 2020;J.…”

Section: Monosaccharide Composition Of Tap and Tmpmentioning

confidence: 99%

“…The antioxidant mechanism of polysaccharides mainly includes removing free radicals via a direct chemical reaction with reactive oxygen species (W. X. Wang & Liu, 2020); enriching polysaccharides with hydroxyl groups, forming metal ion complexes (such as Fe 2+ and Cu 2+ ) and reducing the metal ion content required for the formation of free radicals in the body, thus inhibiting the formation of free radicals (Dubost et al, 2007); enhancing the activity of antioxidant enzymes (e.g., superoxide dismutase [SOD] and catalase [CAT]) to scavenge free radicals, thus exerting an antioxidant effect (F. Li et al, 2021). Research has recently shown that truffle polysaccharides are natural antioxidants with essentially no side effects compared to synthetic antioxidants (propyl gallate, butylhydroxytoluene, and tert-butylhydroquinone) (Q.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of structural and antioxidant activity of polysaccharide extracted from truffles

Guan

Wei

et al. 2022

Journal of Food Science

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As the main component of truffles, polysaccharides have a variety of biological activities such as anti-oxidation, anti-tumor, and hypoglycemic activity, and these activities are closely related to its structure. In this study, Tuber Aestivum crude polysaccharide (TACP) and Tuber Melanosporum crude polysaccharide (TMCP) were obtained from Tuber Aestivum and Tuber Melanosporum by using microwave-assisted hot water, and then the Sephadex G-200 column was utilized to further separate and purify Tuber Aestivum polysaccharide (TAP) and Tuber Melanosporum polysaccharide (TMP) from TACP and TMCP. The structural characterization results showed that the molecular weight of TAP was 2.18 × 10 4 kDa, while TMP was 8.79 × 10 3 kDa. Although the two polysaccharide components were mainly composed of mannose (Man) and glucose (Glc), the molar ratio of Man and Glc in TAP was 14.76: 12.31, with a molar ratio of 5.43:10.94 in TMP. Furthermore, the antioxidant activity of two polysaccharide components was evaluated. TAP and TMP could protect porcine jejunal epithelial (IPEC-J2) cells from oxidative damage by H 2 O 2 , but TAP exhibited stronger antioxidant effects. It was mainly reflected that TAP could increase the secretion level of intracellular antioxidant enzymes (superoxide dismutase and catalase) in IPEC-J2 cells, and had a significant effect on the total antioxidant capacity of cells. The reactive oxygen species and malondialdehyde had better scavenging ability at the concentration of 20 µg/ml. The difference between TAP and TMP may be due to the dissimilar structure. Its structure-activity relationship needs further study. K E Y W O R D Santioxidant activity, structural characterization, Tuber aestivum polysaccharide, Tuber melanosporum polysaccharide Practical Application: The structure of TAP and TMP were different, and TAP had higher molecular weight. Besides, TAP and TMP can protect IPEC-J2 cells from oxidative stress, providing a theoretical basis for developing potential antioxidant drugs of practical significance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Monosaccharide Composition Of Tap and Tmpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of structural and antioxidant activity of polysaccharide extracted from truffles

Guan

Wei

et al. 2022

Journal of Food Science

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“…One new bibenzyl and one new diarylheptanone and diobulbinone A, together with sixteen known compounds, were isolated form the rhizomes of D. bulbifera; this was accomplished by suspending it in H 2 O, successively extracting with 80% EtOH, petroleum ether, and ethyl acetate, and further fractionating with silica gel, Sephadex LH-20, and ODS [173]. It was reported that Dioscorea saponin (DS) can increase the exopolysaccharide production of tuber melanosporum [176].…”

Section: Phytochemicals Of Dioscoreamentioning

confidence: 99%

Dioscorea spp.: Comprehensive Review of Antioxidant Properties and Their Relation to Phytochemicals and Health Benefits

Adomėnienė

Venskutonis

2022

Molecules

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Dioscorea, consisting of over 600 species, is the most important genus in the Dioscoreaceae family; however, the practically used plants, which are commonly called yam, are restricted to a remarkably smaller number of species. Numerous studies have reported the high nutritional value of yam, particularly as an alternative source of starch and some important micronutrients. Several Dioscorea species are widely used for various medicinal purposes as well. In many studies, the bioactivities and health benefits of Dioscorea extracts and other preparations have been related to the presence of phytochemicals, which possess antioxidant properties; they are related mainly to radical-scavenging capacity in chemical assays and positive effects on the endogenous antioxidant system in cell-based and in vivo assays. Considering the increasing number of publications on this topic and the absence of comprehensive and focused review papers on antioxidant potential, this article summarizes the results of studies on the antioxidant properties of Dioscorea spp. and their relation to phytochemicals and health benefits. A comprehensive survey of the published articles has revealed that the majority of studies have been performed with plant tubers (rhizomes, roots), while reports on leaves are rather scarce. In general, leaf extracts demonstrated stronger antioxidant potential than tuber preparations. This may be related to the differences in phytochemical composition: saponins, phenanthrenes and, for some pigment-rich species (purple yams), anthocyanins are important constituents in tubers, while phenolic acids and flavonoids are characteristic phytochemicals in the leaves. The review may assist in explaining ethnopharmacological knowledge on the health benefits of Dioscorea plants and their preparations; moreover, it may foster further studies of poorly investigated species, as well as their wider application in developing new functional foods and nutraceuticals.

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Mycochemicals in wild and cultivated mushrooms: nutrition and health

et al. 2021

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The mushrooms have contributed to the development of active ingredients of fundamental importance in the field of pharmaceutical chemistry as well as of important tools in human and animal health, nutrition, and functional food. This review considers studies on the beneficial effects of medicinal mushrooms on the nutrition and health of humans and farm animals. An overview of the chemical structure and composition of mycochemicals is presented in this review with particular reference to phenolic compounds, triterpenoids and sterols, fatty acids and lipids, polysaccharides, proteins, peptides, and lectins. The nutritional value and chemical composition of wild and cultivated mushrooms in Italy is also the subject of this review which also deals with mushrooms as nutraceuticals and the use of mushrooms in functional foods. The nutraceutical benefits of UV irradiation of cultivated species of basidiomycetes to generate high amounts of vitamin D2 is also highlighted and the ability of the muhsrooms to inhibit glycation is analyzed. Finally, attention is paid to studies on bioactivities of some Italian wild and cultivated mushrooms with particular reference to species belonging to the genus Pleurotus. The review highlights the potential of medicinal mushrooms in the production of mycochemicals that represent a source of drugs, nutraceutical, and functional food. Graphic abstract

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Dioscorea saponin transforms the structure of truffle exo-polysaccharide and enhances its antioxidant activity

Cited by 7 publications

References 41 publications

Comparison of structural and antioxidant activity of polysaccharide extracted from truffles

Comparison of structural and antioxidant activity of polysaccharide extracted from truffles

Dioscorea spp.: Comprehensive Review of Antioxidant Properties and Their Relation to Phytochemicals and Health Benefits

Mycochemicals in wild and cultivated mushrooms: nutrition and health

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