Isolation, structural features, and bioactivities of polysaccharides from Panax notoginseng: A review.

Panax notoginseng a member of the Araliaceous family, is a traditional Chinese medicinal and functional food with a long history. This herb contains various compounds, including saponins, alkaloids, flavones, and polysaccharides. Polysaccharides are the primary bioactive substances in P. notoginseng and have garnered significant attention from researchers globally. Numerous studies have confirmed that Panax notoginseng polysaccharides (PNPs) exhibit a wide range of remarkable bioactivities. These include anti-renal fibrosis, anti-tumor, anti-oxidation, anti-aging, anti-inflammation, immune regulation, liver protection, hypoglycemia, and anti-cerebral ischemia-reperfusion injury effects. They also promote bone growth, defect repair, and improve hematopoietic function. As a natural polysaccharide, PNPs show potential as a drug and functional material with good safety. This review systematically summarizes recent studies on the extraction and purification methods of PNPs, characterizing their chemical structure, biological activity, and application in various fields, aiming to provide theoretical insights and technical guidance for the development of PNPs as a novel functional food.

Exploring Rosa roxburghii Tratt polysaccharides: From extraction to application potential in functional products - An in-depth review.

Rosa roxburghii Tratt (R. roxburghii), a unique ethnic medicine native to southwest China, is classified as both medicinal and culinary, offering a multitude of health benefits. Traditionally, it is used to eliminate diet and relieve diarrhea, nourish Yin and invigorate the spleen, dispel wind and dampness, enhance immunity, and promote the healthy development of the body. Furthermore, it serves as a remedy for ailments such as scurvy, night blindness, cancer, hyperlipidemia, hyperglycemia, and hypertension. R. roxburghii contains many nutritious and active ingredients, including proteins, vitamin C, inorganic salts, essential amino acids, polysaccharides, phenols, triterpenes, organic acids, and superoxide dismutase (SOD). Among them, polysaccharides stand out as pivotal bioactive components, comprising mannose, ribose, rhamnose, glucosamine hydrochloride, glucuronic acid, galacturonic acid, glucose, galactose, arabinose, and fucose, among others. R. roxburghii polysaccharides (RTFPs) present diverse biological activities, including antioxidant, anti-fatigue, hypoglycemic, anti-tumor, immune modulation, relief from ulcerative colitis, protection of neural stem cells from glutamate damage, and improvement of intestinal micro-ecology. Due to its distinctive bioactivity, the research on RTFPs is booming. While numerous extraction and purification techniques have successfully isolated and characterized RTFPs, comprehensive understanding of their chemical structure, mechanisms, structure-activity relationships, safety profiles, and practical applications remains limited. This knowledge gap hampers their optimal utilization and development. In response, this research offers an overview of extraction, purification, structure characteristics, biological activities, structure-activity relationships, and pharmaceutical application of RTFPs. Additionally, this research not only lays a theoretical basis for the comprehensive exploration and exploitation of R. roxburghii and its polysaccharide resources but also offers extensive knowledge and insights into the development and application of RTFPs as a novel functional foods and drugs.

Elucidating the interaction of rhizosphere microorganisms and environmental factors influencing the quality of Polygonatum kingianum Coll. et Hemsl.

Polygonatum kingianum Collett & Hemsl., is one of the most important traditional Chinese medicines in China. The purpose of this study is to investigate the relationship between herb quality and microbial-soil variables, while also examining the composition and structure of the rhizosphere microbial community in Polygonatum kingianum, the ultimate goal is to provide a scientific approach to enhancing the quality of P. kingianum. Illumina NovaSeq technology unlocks comprehensive genetic variation and biological functionality through high-throughput sequencing. And in this study it was used to analyze the rhizosphere microbial communities in the soils of five P. kingianum planting areas. Conventional techniques were used to measure the organic elements, pH, and organic matter content. The active ingredient content of P. kingianum was identified by High Performance Liquid Chromatography (HPLC) and Colorimetry. A total of 12,715 bacterial and 5487 fungal Operational Taxonomic Units (OTU) were obtained and taxonomically categorized into 81 and 7 different phyla. Proteobacteria, Bacteroidetes, and Acidobacteriae were the dominant bacterial phyla Ascomycota and Basidiomycota were the dominat fungal phyla. The key predictors for bacterial community structure included hydrolysable nitrogen and available potassium, while for altering fungal community structure, soil organic carbon content (OCC), total nitrogen content (TNC), and total potassium content (TPOC) were the main influencing factors. Bryobacter and Candidatus Solibacter may indirectly increase the polysaccharide content of P. kingianum, and can be developed as potential Plant Growth Promoting Rhizobacteria (PGPR). This study has confirmed the differences in the soil and microorganisms of different origins of P. kingianum, and their close association with its active ingredients. And it also broadens the idea of studying the link between plants and microorganisms.

Extraction, purification, structural characterization, and bioactivities of the genus Rhodiola L. polysaccharides: A review.

The genus Rhodiola L., an integral part of traditional Chinese medicine and Tibetan medicine in China, exhibits a broad spectrum of applications. This genus contains key compounds such as ginsenosides, polysaccharides, and flavonoids, which possess anti-inflammatory, antioxidant, hypoglycaemic, immune-enhancing, and anti-hypoxic properties. As a vital raw material, Rhodiola L. contributes to twenty-four kinds of Chinese patent medicines and 481 health food products in China, finding extensive application in the health food sector. Recently, polysaccharides have emerged as a focal point in natural product research, with applications spanning the medicine, food, and materials sectors. Despite this, a comprehensive and systematic review of polysaccharides from the genus Rhodiola L. polysaccharides (TGRPs) is warranted. This study undertakes a systematic review of both domestic and international literature, assessing the research advancements and chemical functional values of polysaccharides derived from Rhodiola rosea. It involves the isolation, purification, and identification of a variety of homogeneous polysaccharides, followed by a detailed analysis of their chemical structures, pharmacological activities, and molecular mechanisms, structure-activity relationship (SAR) of TGRPs. The discussion includes the influence of molecular weight, monosaccharide composition, and glycosidic bonds on their biological activities, such as sulfation and carboxymethylation et al. Such analyses are crucial for deepening the understanding of Rhodiola rosea and for fostering the development and exploitation of TGRPs, offering a reference point for further investigations into TGRPs and their resource utilization.

The complete chloroplast genome of Verbascum thapsus L. (Scrophulariaceae) and its phylogenetic affinities.

Verbascum thapsus L. has extensive pharmacological effects, including antioxidative and antineoplastic action, memory improvement and neuroprotection. However, its phylogenetic position is not established in Scrophulariaceae. In this study, we reported the complete chloroplast genome sequence of V. thapsus L. for the first time and investigate its phylogenetic relationship in Scrophulariaceae. The assembled chloroplast genome is a circular 153,338 bp sequence, including a large single copy (LSC) region of 84,627 bp, a small single copy (SSC) region of 17,829 bp and a pair of inverted repeats (IRs) of 25,441 bp. The genome contains 135 genes, including 86 protein coding genes, 37 tRNA genes, and eight rRNA genes. The phylogenetic tree showed that V. thapsus is closely associated with V. chinense and V. phoeniceum.

Structural characterization, hypoglycemic effects and antidiabetic mechanism of a novel polysaccharides from Polygonatum kingianum Coll. et Hemsl.

The rhizome of Polygonatum kingianum has been used as a traditional medicine in China. In this study, a novel polysaccharides (PKPs-1) was isolated from P. kingianum and characterized by its molecular weight, primary structure. The hypoglycemic activity of PKPs-1was investigated by in vitro assay with the HepG2 cell line and in vivo test using STZ-induced diabetic mice. Results showed that the average molecular weight of PKPs-1 was 14.05 kDa and is composed mainly of glucose and mannose. Methylation analysis indicated that this polysaccharides fraction consisted mainly of ß1,2-link glucose. Besides, PKPs-1 exhibited significant anti-hyperglycemic activity on STZ-induced mice, improved insulin tolerance, and affected the metabolism of serum lipids. Results of real-time quantitative PCR (RT-PCR) showed that PKPs-1 significantly increased the expression of insulin receptor substrate-1 (IRS-1), phosphoinositide 3-kinase (PI3K) and protein kinase B (AKT), indicating that PKPs-1 regulates glucose metabolism by activating the PI3K/AKT signaling pathway. This study provides new insights for investigating the hypoglycemic effects of PKPs-1 and suggests that PKPs-1 could be a promising functional food or medicine for treating T2DM.

The complete chloroplast genome sequence of the medicinal plant Gonostegia hirta (Bl.) Miq. (Urticaceae).

The total length of the chloroplast genome was 159,086 bp, with 35.9% overall GC content and exhibited typical quadripartite structure, a pair of IRs (inverted repeats) of 30,727 bp was separated by a small single copy (SSC) region of 18,661 bp and a large single copy (LSC) region of 78,971 bp. The cp genome contained 107 genes, including 77 protein-coding genes, 30 tRNA genes, and four rRNA genes. The phylogenetic analysis indicated Gonostegia was closely related to Debregeasia.

The complete chloroplast genome sequence of the medicinal plant Paeonia delavayi Franchet. (Paeoniaceae).

Paeonia delavayi is a medicinal plant commonly used in southwest of China. In this study, we sequenced the complete chloroplast (cp) genome sequence of P. delavayi to investigate its phylogenetic relationship in the family Paeoniaceae. The chloroplast genome of P. delavayi was 152,872 bp in length with 38.4% overall GC content, including a large single copy (LSC) region of 84,523 bp, a small single copy (SSC) region of 17,053 bp and a pair of inverted repeats (IRs) of 25,646 bp. The cp genome contained 105 genes, including 75 protein coding genes, 27 tRNA genes, and 4 rRNA genes. The phylogenetic analysis indicated P. delavayi was closely related to P. ludlowii.

The complete chloroplast genome sequence of the medicinal plant Salvia yunnanensis C. H. Wright. (Lamiaceae).

Salvia yunnanensis is a medicinal plant commonly used in the southwest of China. In this study, we sequenced the complete chloroplast (cp) genome sequence of S. yunnanensis to investigate its phylogenetic relationship in the family Lamiaceae. The total length of the cp genome was 151,338 bp, with 38.0% overall GC content and exhibited typical quadripartite structure, a pair of IRs (inverted repeats) of 25,578 bp each were separated by a small single-copy (SSC) region of 17,564 bp and a large single-copy (LSC) region of 82,618 bp. The cp genome contained 114 genes, including 80 protein coding genes, 30 tRNA genes, and 4 rRNA genes. The phylogenetic analysis indicated S. yunnanensis was closely related to S. miltiorrhiza, which afforded a scientific evidence that S. yunnanensis could be used as original species of Radix et Rhizoma Saliviae Miltiorrhizae (Danshen).

Characterisation of the complete chloroplast genome of Gentiana delavayi Franch. (gentianaceae), a medicinal plant in southwest of China.

Gentiana delavayi is a medicinal plant commonly used in southwest of China. In this study, we sequenced the complete chloroplast (cp) genome sequence of G. delavayi to investigate its phylogenetic relationship in the family Gentianaceae. The chloroplast genome of G. delavayi was 151,569 bp in length with 37.8% overall GC content, including a large single copy (LSC) region of 81,177 bp, a small single copy (SSC) region of 16,921 bp and a pair of inverted repeats (IRs) of 25,471 bp. The cp genome contained 114 genes, including 78 protein coding genes, 30 tRNA genes, and 4 rRNA genes. The phylogenetic analysis indicated G. delavayi was closely related to G. stipitata.

Characterization of the complete chloroplast genome of Ajuga forrestii (Lamiaceae), a medicinal plant in southwest of China.

Ajuga forrestii is a medicinal plant commonly used in southwest of China. In this study, we sequenced the complete chloroplast (cp) genome sequence of A. forrestii to investigate its phylogenetic relationship in the family Lamiaceae. The chloroplast genome of A. forrestii was 150,492 bp in length with 38.3% overall GC content, including a large single copy (LSC) region of 82,148 bp, a small single copy (SSC) region of 17,160 bp and a pair of inverted repeats (IRs) of 25,592 bp. The cp genome contained 112 genes, including 79 protein coding genes, 29 tRNA genes, and 4 rRNA genes. The phylogenetic analysis indicated Ajuga was closely related to Scutellaria.

The complete chloroplast genome sequence of the medicinal plant Paris polyphylla (Melanthiaceae).

Paris polyphylla is a medicinal plant commonly used in southwest of China. In this study, we sequenced the complete chloroplast (cp) genome sequence of P. polyphylla to investigate its phylogenetic relationship in the genus Paris. The chloroplast genome of P. polyphylla was 163,533 bp in length with 37.1% overall GC content, including a large single copy (LSC) region of 84,272 bp, a small single copy (SSC) region of 12,899 bp and a pair of inverted repeats (IRs) of 33,181 bp. The cp genome contained 114 genes, including 79 protein coding genes, 30 tRNA genes, and 4 rRNA genes. The phylogenetic analysis indicated P. polyphylla was closely related to P. marmorata.

[Development strategy of Paris based on combination of domestic patent and current resource application and development].

Paris is a commonly used traditional Chinese medicine (TCM), and has antitumor, antibacterial, sedative, analgesic and hemostatic effects. It has been used as an ingredient of 81 Chinese patent medicines, with a wide application and large market demand. Based on the data retrieved from state Intellectual Property Office patent database, a comprehensive analysis was made on Paris patents, so as to explore the current features of Paris patents in the aspects of domestic patent output, development trend, technology field distribution, time dimension, technology growth rate and patent applicant, and reveal the development trend of China's Paris industry. In addition, based on the current Paris resource application and development, a sustainable, multi-channel and multi-level industrial development approach was built. According to the results, studies of Paris in China are at the rapid development period, with a good development trend. However, because wild Paris resources tend to be exhausted, the studies for artificial cultivation technology should be strengthened to promote the industrial development.