Structure characteristics of a water-soluble polysaccharide purified from dragon fruit (Hylocereus undatus) pulp

Xu, Li; Zhang, Yaojie; Wang, Lizhi

doi:10.1016/j.carbpol.2016.03.060

Cited by 67 publications

(26 citation statements)

References 28 publications

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“…The dried powder of broccoli byproducts was treated twice with petroleum ether to remove some colored materials, fat‐soluble materials, refluxed twice with ethanol (80% v/v) for 3 hr at 70°C to remove monosaccharides, oligosaccharides, isoflavones, and polyphenols. After the insoluble residue was dried in an oven at 50°C, extraction of polysaccharides were performed according to the method with some modifications (Xu, Zhang, & Wang, ). Five gram of dried pretreated powder was mixed with distilled water in a 250‐mL beaker.…”

Section: Methodsmentioning

confidence: 99%

Extraction optimization, antioxidant, and hypoglycemic activities in vitro of polysaccharides from broccoli byproducts

et al. 2017

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Broccoli is a health‐promoting food and its enormous byproducts, such as leaves and stalks, are a promising source of valuable components. In this study, extraction optimization, antioxidant, and hypoglycemic activities in vitro of polysaccharides from broccoli byproducts (PBB) were investigated. Plackett–Burman design, response surface methodology were applied to optimize the extraction of PBB. The optimal extraction conditions with a yield of (16.59 ± 0.04) % for extraction of PBB were determined as extraction temperature 82°C, extraction time 212 min and ratio of water to raw material 26 mL/g. And, PBB‐1obtained from deproteinization and decolorization of PBB was separated into two fractions: PBB‐1a and PBB‐1c by DEAE‐Sepharose. PBB‐1c exhibited better bioactivities than PBB‐1and PBB‐1a, including antioxidant, α‐amylase, and α‐glucosidase inhibitory activities. Overall, these data suggest significant potential for the antioxidant and hypoglycemic activities of PBB‐1c indicating the need for their further exploration as functional food ingredients or complementary medicine. Practical applications Byproducts from broccoli industrial processing represent between 60 and 70% of the broccoli plant weight, but they are also a promising source of valuable components. Currently, polysaccharides have attracted extensive attention due to their various biological and pharmacological activities, including antioxidant, hypoglycemic, and anticancer. Therefore, the present study aimed at optimizing the extraction process to extract polysaccharides from broccoli discarded waste having in view applications in food and pharmaceutical industries.

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Section: Methodsmentioning

confidence: 99%

Extraction optimization, antioxidant, and hypoglycemic activities in vitro of polysaccharides from broccoli byproducts

et al. 2017

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“…linkage are some of the structural features recognized to contribute to the polysaccharides immunostimulatory activity [34]. The content of uronic acids has been considered to play important roles in biological activity [35][36][37], and many acid polysaccharides have immunomodulatory activity [36][37][38]. The existence of functional groups of monosaccharides is a crucial structural feature for immunostimulatory activity [36,37].…”

Section: Immunological Activity and Structurementioning

confidence: 99%

Structure elucidation of a pectin fromDendrobium nobileLindl. and its immunological activity

Wang

Zhang

Luo

2018

Biotechnology & Biotechnological Equipment

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In this study, an RG-I pectin DNP-W6 was isolated from the stems of Dendrobium nobile Lindl. (Orchidaceae). It contained mannose, glucose, galactose, galacturonic acid and rhamnose in a molar ratio of 0.6: 1.0: 1.5: 1.1: 1.0. Its structural features were revealed by chemical, physical and spectral analysis. The results suggested that DNP-W6 possessed a backbone of a disaccharide of !4)-a-GalAp-(1!2)-a-Rhap-(1!, with approximate 50% substitution at O-4 of the rhamnopyranosyl residues. The side chains were neutral chains including galactosyl, mannosyl and glucosyl chains. The acetyl content was estimated to be 8.9%. The immunological results indicated that DNP-W6 and its derivatives exhibited different immunological activities in vitro, showing that the side chains and acetyl groups had an important effect on the expression of immunological activities.

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“…These results were consistent with the glycoside bond types of FTIR analysis. The weak peaks at 5.00–5.29 ppm were attributed to α‐Ara residues, and the peak at 4.90 ppm was attributed to α‐Glc residue (Li et al., 2017; Xu et al., 2016). In addition, signals between 3.62 and 3.35 ppm indicate the presence of methoxyl.…”

Section: Resultsmentioning

confidence: 99%

Extraction of polysaccharides from Codonopsis pilosula by fermentation with response surface methodology

Yuan

Xia

et al. 2020

Food Science & Nutrition

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As a traditional Chinese medicine, C. pilosula has been widely recorded in many ancient books. It has been mainly used for strengthening the spleen, moistening the lung, nourishing blood, engendering fluid, enhancing immune function, and modulating antitumor effect (Bai et al., 2018; Zou et al., 2014). At present, the commonly used polysaccharide extraction methods include hot water extraction, acid-base extraction, and ultrasonic-assisted extraction (Dou et al., 2019; Yilmaz & Sebnem, 2017). These methods have their advantages and disadvantages. We use yeast to grow and use the characteristics of oligosaccharides such as glucose and fructose. After fermenting C. pilosula, the yeast consumes monosaccharides and disaccharides in C.pilosula to improve the extraction efficiency and purity of polysaccharides and explore a new type of polysaccharide extraction method. In this study, RSM was employed to estimate the influence of different extraction parameters (fermentation temperature, time, and yeast addition) on the yields of polysaccharides from C. pilosula. Column chromatography was used to purify water-extracted polysaccharides and fermentation polysaccharides. Then, NMR, FTIR,

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Structure characteristics of a water-soluble polysaccharide purified from dragon fruit (Hylocereus undatus) pulp

Cited by 67 publications

References 28 publications

Extraction optimization, antioxidant, and hypoglycemic activities in vitro of polysaccharides from broccoli byproducts

Extraction optimization, antioxidant, and hypoglycemic activities in vitro of polysaccharides from broccoli byproducts

Structure elucidation of a pectin fromDendrobium nobileLindl. and its immunological activity

Extraction of polysaccharides from Codonopsis pilosula by fermentation with response surface methodology

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