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. 2024 Jun 25;13(13):2010.
doi: 10.3390/foods13132010.

Comparison of Polygonatum sibiricum Polysaccharides Found in Young and Mature Rhizomes

Yan Chen  1 , Jing Liu  2 , Yifan Xu  1 , Chaoqun Sun  1 , Wenjie Qu  1 , Hanchen Du  1 , Menglu He  1 , Junsheng Huo  1 , Jing Sun  1 , Jian Huang  1 , Jiyong Yin  1
Affiliations

Comparison of Polygonatum sibiricum Polysaccharides Found in Young and Mature Rhizomes

Yan Chen et al. Foods. .

Abstract

The main active component of Polygonatum sibiricum (P. sibiricum) rhizome is Polygonatum sibiricum Polysaccharide (PsP) with antioxidant function. At present, only the mature rhizome of P. sibiricum is used to extract PsP, while the young rhizome of by-product is discarded directly as waste, resulting in significant wastage of P. sibiricum resources. We used ultrasound-assisted extraction-deep eutectic solvents (UAE-DESs) method to extract PsP of young and mature rhizomes, respectively. The extraction rate, structure composition and antioxidant ability of PsP between young and mature rhizomes were compared, so as to provide references for comprehensive utilization of P. sibiricum resources. The PsP extraction rate (33.88 ± 1.95%) of young rhizome was close to that (45.08 ± 1.92%) of mature rhizomes. The main component (PsP-2) of the PsP in young rhizome contained six kinds of monosaccharides, which belonged to acidic polysaccharides. The above characteristics of the PsP of young rhizome were similar to those of mature rhizome. The PsP of young rhizome also exhibited similar biological activity to that of the mature rhizome, which indicated even more advantages in DPPH free radical scavenging ability. The results of this study support the utility of the young rhizome, consequently helping to avoid unnecessary waste and provide reference for comprehensive utilization of P. sibiricum.

Keywords: antioxidant function; by-products; extraction rate; structure composition.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Experimental technical process chart. Abbreviations: DESs, deep eutectic solvents; UAE-DESs, ultrasound-assisted extraction-deep eutectic solvents; PSP, Polygonatum sibiricum Polysaccharide.
Figure 2
Figure 2
Elution curve of PsP. (a) Elution curve of PsP from young rhizome on Sephadex G-50 column. (b) Elution curve of PsP from mature rhizome on Sephadex G-50 column [24]. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide.
Figure 3
Figure 3
Molecular weight distribution of PsP. (a) Molecular weight distribution of PsP from young rhizome. (b) Molecular weight distribution of PsP from mature rhizome [24]. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide.
Figure 4
Figure 4
Monosaccharide composition of PsP. (a) Monosaccharide composition of PsP from young rhizome. (b) Monosaccharide composition of PsP from mature rhizome. Note: The monosaccharides are Man, Rha, GalA, Glc, Gal and Xyl in chronological order, successively. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide; Man, mannose; Rha, rhamnose; GalA, galactose acid; Glc, glucose; Gal, galactose; Xyl, xylose.
Figure 5
Figure 5
Infrared spectrum of PsP. (a) Infrared spectrum of PsP from young rhizome. (b) Infrared spectrum of PsP from mature rhizome. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide.
Figure 6
Figure 6
Results of DPPH and ABTS scavenging rate. (a) Results of DPPH scavenging rate. (b) Results of ABTS scavenging rate. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide.
Figure 7
Figure 7
Results of total oxyradical scavenging ability. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide.
Figure 8
Figure 8
Results of in vitro catalase activity. Abbreviations: PsP, Polygonatum sibiricum Polysaccharide.
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