A new arabinoxylan from green leaves of Litsea glutinosa (Lauraeae): Structural and biological studies

Das, Debsankar; Maiti, Swatilekha; Maiti, Tapas K.; Islam, Syed S.

doi:10.1016/j.carbpol.2012.10.052

Cited by 45 publications

(20 citation statements)

References 26 publications

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“…An arabinoxylan obtained from rice bran, the green leaves of Litsea glutinosa , and wheat bran have been shown to increase macrophage activity, either in vitro [24,25] or in tumor-bearing mice [26]. In addition, an arabinoxylan isolated from rice bran increased CD4+ T cell function in human monocyte-derived dendritic cells [20], and increased T and B cell proliferation in both humans with and without cancer [13,27].…”

Section: Discussionmentioning

confidence: 99%

Dietary supplementation with rice bran fermented with Lentinus edodesincreases interferon-γ activity without causing adverse effects: a randomized, double-blind, placebo-controlled, parallel-group study

Choi

Paik

Kwon

et al. 2014

Nutr J

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BackgroundThe purpose of this study was to investigate the hypothesis that dietary supplementation with rice bran fermented with Lentinus edodes (rice bran exo-biopolymer, RBEP), a substance known to contain arabinoxylan, enhances natural killer (NK) cell activity and modulates cytokine production in healthy adults.MethodsThis study was designed in a randomized, double-blind, placebo-controlled, and parallel-group format. Eighty healthy participants with white blood cell counts of 4,000-8,000 cells/μL were randomly assigned to take six capsules per day of either 3 g RBEP or 3 g placebo for 8 weeks. Three participants in the placebo group were excluded after initiation of the protocol; no severe adverse effects from RBEP supplementation were reported. NK cell activity of peripheral blood mononuclear cells was measured using nonradioactive cytotoxicity assay kits and serum cytokine concentrations included interferon (IFN)-γ, tumor necrosis factor (TNF)-α, interleukin (IL)-2, IL-4, IL-10, and IL-12 were measured by Bio-Plex cytokine assay kit. This study was registered with the Clinical Research Information Service (KCT0000536).ResultsSupplementation of RBEP significantly increased IFN-γ production compared with the placebo group (P = 0.012). However, RBEP supplementation did not affect either NK cell activity or cytokine levels, including IL-2, IL-4, IL-10, IL-12, and TNF-α, compared with the placebo group.ConclusionsThe data obtained in this study indicate that RBEP supplementation increases IFN-γ secretion without causing significant adverse effects, and thus may be beneficial to healthy individuals. This new rice bran-derived product may therefore be potentially useful to include in the formulation of solid and liquid foods designed for treatment and prevention of pathological states associated with defective immune responses.

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Section: Discussionmentioning

confidence: 99%

Dietary supplementation with rice bran fermented with Lentinus edodesincreases interferon-γ activity without causing adverse effects: a randomized, double-blind, placebo-controlled, parallel-group study

Choi

Paik

Kwon

et al. 2014

Nutr J

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“…It is distributed throughout South Asia and Southeast Asia, including India, Bangladesh, the Philippines, and Thailand [68][69][70][71]. It is a medium-sized plant, approximately 20 m tall [68][69][70]72,73]. The branch shape is slim, stiff, and tomentose towards the apex.…”

Section: Litsea Glutinosamentioning

confidence: 99%

“…Pharmacology and utilisations: L. glutinosa has been used as traditional medicines due to various biological activities such as antispasmodic, antibacterial, and cardiovascular activities [68,71]. The bark and leaves ( Figure 1) were used as a demulcent and a mild astringent for diarrhoea and dysentery due to balsamic and mucilaginous nature, while the paste from its roots is used as poultice for sprains and bruises [69,70,72]. The leaf extract of L. glutinosa showed significant antinociceptive property against chemical and thermal stimuli [70].…”

Section: Litsea Glutinosamentioning

confidence: 99%

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

2019

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The natural forests of Northern Thailand are the mother source of many utilisable natural products because of their diverse flora and fauna. Northern Thai people have learned to utilise plants, in particular those of plants with cleansing properties, since the beginning of time. Several local species of detergent plants in Thailand are traditionally used by the locals and indigenous people. However, these plants may become extinct because their habitats have been replaced by industrial agriculture, and their uses have been replaced by chemically synthesised detergents. Researchers need to study and communicate the biology, phytochemistry, and the importance of these plants to conserve natural biodiversity of Northern Thailand. Of many utilisable detergent phytochemicals, natural saponins are known as bio-based surfactant and foaming agents. Their physiochemical and biological properties feature structural diversity, which leads to many industrial applications. In this review, we explained the term “detergent” from the physiological mechanism perspective and the detergent effects of saponins. We also compiled a list of Thai local plants with cleansing properties focusing on the saponin-containing plants. Future studies should investigate information relative to plant environment, ethnobotanical data, and the bioactive compound content of these plants. The knowledge acquired from this study will promote the maintenance of the local biodiversity and the conservation of the detergent plant species found in Thailand.

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“…Pharmacology and utilisations: L. glutinosa has been used as traditional medicines due to various biological activities such as antispasmodic, antibacterial and cardiovascular activities [68,71]. The bark and leaves ( Figure 3) were used as a demulcent and a mild astringent for diarrhea and dysentery due to balsamic and mucilaginous nature, while the paste of its roots is used as poultice in sprain and bruise [69,70,72]. The leaf extract of L. glutinosa showed significant antinociceptive property against chemical and thermal stimuli [70].…”

Section: Frequently Mentioned Detergent Plants In Northern Thailandmentioning

confidence: 99%

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

Wisetkomolmat¹,

Suppakittpaisarn²,

Sommano³

2018

Preprint

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The natural forests of Northern Thailand are the mother source of many utilisable natural products because of their diverse flora and fauna. Among many plant species found within Northern Thai forests, detergent plants are known for its distinctive cleansing properties. Several local species of detergent plants in Thailand are traditionally used by the locals and indigenous people. However, these plants may become extinct because their habitats have been replaced by industrial agriculture, and their uses have been replaced by chemically synthesised detergents. Researchers need to study and communicate the biology, phytochemistry, and the importance of these plants to conserve natural biodiversity of Northern Thailand. Of many utilisable detergent phytochemicals, natural saponins are known as bio-surfactant and foaming agents. Their physiochemical and biological properties feature structural diversity, which leads to many industrial applications.  In this review, we explained the term “detergent” from the physiological mechanism perspective and the detergent effects of saponin.  We also compiled a list of Thai local plants with cleansing properties focusing on the saponin-containing plants. Future studies should investigate information relative to plant environment, ethnobotanical data and bioactive compound content of these plants. The knowledge acquired from this study will promote the maintenance of the local biodiversity and the conservation of the detergent plant species found in Thailand.

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A new arabinoxylan from green leaves of Litsea glutinosa (Lauraeae): Structural and biological studies

Cited by 45 publications

References 26 publications

Dietary supplementation with rice bran fermented with Lentinus edodesincreases interferon-γ activity without causing adverse effects: a randomized, double-blind, placebo-controlled, parallel-group study

Dietary supplementation with rice bran fermented with Lentinus edodesincreases interferon-γ activity without causing adverse effects: a randomized, double-blind, placebo-controlled, parallel-group study

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

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