Purification, structural characterization and anticancer activity of the novel polysaccharides from Rhynchosia minima root

Meng

et al. 2017

CyTA - Journal of Food

Characterization, antioxidant activities and hepatoprotective effects of polysaccharides from prepressing separation apple (Fuji) peel pomace were investigated in this study. Gel permeation chromatography indicated that apple peel polysaccharides (APPs) were a kind of heteropolysaccharides composed of three fractions with homogenous polarity. Both GC-MS and HPLC analysis showed that arabinose, galactose and galacturonic acid were the main monosaccharides in APP. In vitro antioxidant activities of APP were characterized. Furthermore, administration of APP (450 mg/ kg bw) in mice significantly decreased the CCl 4 -induced elevations of serum alanine aminotransferase, asparate aminotransferase and lactic dehydrogenase activities, and hepatic malondialdehyde level and inhibited the decreases in superoxide dismutase and glutathione peroxidase activities caused by CCl 4 . Histopathological observation further confirmed that APP could protect the liver tissues from CCl 4 -induced histological alternation. These findings indicate that APP has the antioxidant and hepatoprotective potentials and provide a scientific basis for comprehensive utilization of pre-pressing separation apple peel pomace.Caracterización, actividad antioxidante y efectos hepatoprotectores de polisacáridos de la separación de la pela de manzana Fuji previamente prensada RESUMEN En este estudio se investigaron la caracterización, la actividad antioxidante y los efectos hepatoprotectores de los polisacáridos de la separación del orujo de pela de manzana (Fuji) previamente prensado. La cromatografía de permeación en gel indicó que los polisacáridos de la pela de manzana (APP) eran un tipo de heteropolisacáridos compuestos de tres fracciones con polaridad homogénea. Los dos análisis GC-MS y HPLC mostraron que la arabinosa, la galactosa y el ácido galacturónico fueron los principales monosacáridos en APP. Se caracterizó la actividad antioxidante in vitro de APP. Además, la administración de APP (450 mg/kg bw) en ratones disminuyó significativamente las elevaciones inducidas con CCl 4 de la alanina aminotransferasa sérica, el aspartato aminotransferasa, la actividad lactato deshidrogenasa y el nivel hepático de malondialdehído, además inhibió la disminución de la actividad de superóxido dismutasa y glutatión peroxidasa causada por CCl 4 . Posteriormente la observación histopatológica confirmó que APP podría proteger los tejidos del hígado de la alternación histológica inducida con Cl 4 . Estos hallazgos indican que APP tiene potencial antioxidante y hepatoprotector, además proporciona una base científica para una utilización integral de la separación de orujo de pela de manzana previamente prensado. ARTICLE HISTORY

Section: Characterization Of Appmentioning

confidence: 99%

Section: Separation Of App By Gel Permeation Chromatographymentioning

confidence: 99%

Characterization, antioxidant activities and hepatoprotective effects of polysaccharides from pre-pressing separationFujiapple peel

Meng

et al. 2017

CyTA - Journal of Food

“…Molecules 2015, 20, page-page dose-dependent manner [10]. In order to further develop and explore this valuable resource, there is a pressing demand to obtain extensive crude polysaccharides in a short span of time.…”

Section: Single Factor Experimental Analysismentioning

confidence: 99%

“…The effect of ultrasound exposure time on the yield of PRM is shown in Figure 1a. Various times (5,10,20,30, 40 and 50 min) were examined, while other extraction variables were kept as follows: ratio of water to material, 50 mL/g; ultrasound extraction temperature, 50 °C. The yield of PRM increased rapidly for increasing ultrasound exposure times ranging from 5 to 20 min.…”

Section: Single Factor Experimental Analysismentioning

confidence: 99%

See 1 more Smart Citation

Ultrasound-Assisted Extraction, Antioxidant and Anticancer Activities of the Polysaccharides from Rhynchosia minima Root

Jia

Zhang

et al. 2015

Molecules

Self Cite

Box-Behnken design (BBD), one of the most common response surface methodology (RSM) methods, was used to optimize the experimental conditions for ultrasound-assisted extraction of polysaccharides from Rhynchosia minima root (PRM). The antioxidant abilities and anticancer activity of purified polysaccharide fractions were also measured. The results showed that optimal extraction parameters were as follows: ultrasound exposure time, 21 min; ratio of water to material, 46 mL/g; ultrasound extraction temperature, 63˝C. Under these conditions, the maximum yield of PRM was 16.95%˘0.07%. Furthermore, the main monosaccharides of purified fractions were Ara and Gal. PRM3 and PRM5 exhibited remarkable DPPH radical scavenging activities and reducing power in vitro. PRM3 showed strong inhibitory activities on the growth of MCF-7 cells in vitro. The above results indicate that polysaccharides from R. minima root have the potential to be developed as natural antioxidants and anticancer ingredients for the food and pharmaceutical industries.

Chemistry & Biodiversity

Allelopathic Activity and Chemical Composition of Rhynchosia minima (L.) DC. Essential Oil from Egypt

El-Gawad

El‐Amier

Bonanomi

2017

Aromatic plants attract the attention of many researchers worldwide due to their worthy applications in agriculture, human prosperity, and the environment. Essential oil (EO) could be exploited as effective alternatives to synthetic compounds as it has several biological activities including allelopathy. The EO from the aerial parts of Rhynchosia minima was extracted by hydrodistillation and investigated by gas chromatography/mass spectrometry (GC/MS). Different concentrations (50, 100, 150 and 200 lL L À1 ) of the EO were prepared for investigation of their allelopathic potential on two weeds; Dactyloctenium aegyptium and Rumex dentatus. Twenty-eight compounds, mainly sesquiterpenes (69.13%) were determined. The major compounds are a-eudesmol, 2-allyl-5-tertbutylhydroquinone, caryophyllene oxide, trans-caryophyllene, and s-cadinol. The EO from the R. minima showed a significant inhibition of D. aegyptium and R. dentatus germination, while the seedling growth was stimulated. Therefore, it is not recommended to treat these noxious weeds with the EO of R. minima before the germination. In contrast, the apparent stimulatory effect on the seedling growth offers further studies to use the EO of R. minima to enhance the fitness of different economic crops. However, characterization of green bio-herbicides such as EO (allelochemicals) from wild plants raises a new opportunity for the incorporation of new technology of bio-control against the noxious weeds.