Extractions and rheological properties of polysaccharide from okra pulp under mild conditions

Li, Yinping; Wang, Xinyu; Lv, Xinyao; Wang, Xinxin; Wang, Xishuang; Cui, Jinling; Yan, Mingyan

doi:10.1016/j.ijbiomac.2020.01.163

Cited by 28 publications

(5 citation statements)

References 63 publications

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“…With the increase of acid strength or alkali strength, the viscosity of all the solutions decreased, indicating that both strong acid or strong alkali can cause the cleavage of partial hydrogen bonds, leading to the damage of their partial structure and decrease in the viscosity of TPS fraction solutions. This result is similar to that of polysaccharide from okra pulp (Y. P. Li et al, 2020).…”

Section: Effect Of Ph On the Viscosity Of The Tps Fraction Solutionssupporting

confidence: 85%

Physicochemical and rheological properties of Tremella fuciformis polysaccharide fractions by ethanol precipitation

Lan

Wang²,

Deng

et al. 2021

CyTA - Journal of Food

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Four Tremella fuciformis polysaccharides (TPS) fractions named as TPS20, TPS40, TPS60, and TPS80 were obtained by stepwise ethanol precipitation. Their physicochemical and rheological properties were investigated. Results showed TPS60 had the highest contents of polysaccharide (81.12%), protein (0.29%), uronic acid (14.36%), and sulfate (5.92%). Their molecular weights were in a descending order of TPS20, TPS40, TPS60, and TPS80. In a certain range of shear rate, they all presented pseudoplastic fluid and viscosity characteristic at low frequency. Increasing temperature or concentration of salts decreased the viscosity of their solutions. Sucrose concentration less than 6% led to an increasing viscosity of TPS20, TPS40, and TPS60. Both strong acidity and alkalinity could reduce the viscosity of all TPS solutions. TPS80 solution showed the best stability and its viscosity was minimally affected by pH, temperature, salts, and sucrose. These results can provide theoretical references for utilizations of TPS fractions in foods, pharmaceuticals, and cosmetics. Propiedades fisicoquímicas y reológicas de las fracciones de polisacáridos de Tremella fuciformis obtenidas por precipitación en etanol RESUMENPara el presente estudio se obtuvieron, mediante precipitación por etapas en etanol, cuatro fracciones de polisacáridos de Tremella fuciformis (TPS) denominadas TPS20, TPS40, TPS60 y TPS80. Se investigaron sus propiedades fisicoquímicas y reológicas y los resultados dieron cuenta de que la TPS60 tiene el mayor contenido de polisacáridos (81.12%), proteínas (0.29%), ácido urónico (14.36%) y sulfato (5.92%). Además, se comprobó que sus pesos moleculares estaban en un orden descendente de TPS20, TPS40, TPS60 y TPS80, constatándose que, en un determinado rango de velocidad de cizallamiento, todas las fracciones presentaban un fluido pseudoplástico y una viscosidad característica a baja frecuencia. Asimismo, tanto el aumento de la temperatura como de la concentración de sales disminuyó la viscosidad de sus soluciones, en tanto que la concentración de sacarosa inferior a 6% provocó un incremento de la viscosidad de TPS20, TPS40 y TPS60. Aunque la acidez y la alcalinidad fuertes pueden reducir la viscosidad de todas las soluciones de TPS, la solución TPS80 presentó la mejor estabilidad y su viscosidad se vio mínimamente afectada por el pH, la temperatura, las sales y la sacarosa. En conclusión, estos resultados pueden proporcionar referencias teóricas para la utilización de fracciones de TPS en alimentos, productos farmacéuticos y cosméticos.

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Section: Effect Of Ph On the Viscosity Of The Tps Fraction Solutionssupporting

confidence: 85%

Physicochemical and rheological properties of Tremella fuciformis polysaccharide fractions by ethanol precipitation

Lan

Wang²,

Deng

et al. 2021

CyTA - Journal of Food

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“…Although the extraction yield in this study is slightly lower than the reports of Nagpal et al [49] (31.52%) and Li et al [50] (29.4%), it is much higher than that of the previous studies of Elkhalifa et al [51] (2.66%), Zhang et al [52] (7.9%), Wang et al [5] (10.35%), Kpodo et al…”

Section: Basic Composition and Content Determinationcontrasting

confidence: 75%

“…[53] (14.6%) and Samavati [54] (16.9%). Such variations in the percentage yield of okra polysaccharide could be due to several factors, including the physical (hydrated or dried) and maturation states of pods, the cultivation region and the extraction method used [50]. As shown in Table 1, the chemical analysis results showed that the contents of total sugar, uronic acid and protein in OPS were 70.61 ± 3.55%, 27 ± 1.5% and 6.54 ± 0.12%, respectively.…”

Section: Basic Composition and Content Determinationmentioning

confidence: 99%

A novel pectic polysaccharide-based hydrogel derived from okra (Abelmoschus esculentusL. Moench) for chronic diabetic wound healing

Maâlej

Maalej

Bayach

et al. 2023

European Polymer Journal

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“…However, with higher concentrations (above 2%), the system’s viscosity decreased progressively with increasing shear rates, indicating that the HPCP had shear thinning behavior at these concentrations. In general, higher shear rates can result in a polymer solution’s greater directional flow, with hydrodynamic size changes, leading to a decrease in the apparent viscosity of the polysaccharides [ 29 ]. Similar shear-thinning flow behavior has also been observed in other plant-derived polysaccharides, such as those extracted from Dendrobium officinale [ 30 ] and cactus pear fruits [ 31 ], where the viscosity generally increased with increasing polysaccharide concentrations.…”

Section: Resultsmentioning

confidence: 99%

Extraction, Rheological, and Physicochemical Properties of Water-Soluble Polysaccharides with Antioxidant Capacity from Penthorum chinense Pursh

Chen,

Song,

Chen

et al. 2023

Foods

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This study aimed to isolate polysaccharides from Penthorum chinense Pursh and evaluate their rheological characteristics, physicochemical properties, and antioxidant activity. The optimal conditions for the maximal extraction yield of Penthorum chinense Pursh polysaccharides (4.05 ± 0.12%) were determined by employing a single-factor test and response surface methodology which included an extraction time of 3 h, a liquid–solid ratio of 20 mL/g, and three separate extraction times. The rheological experiments showcased that the P. chinense polysaccharides exhibited typical shear-thinning behavior, with their apparent viscosity being influenced by various parameters such as concentration, pH, temperature, salt content, and freeze–thaw. The purified polysaccharides (PCP-100), having an average molecular weight of 1.46 × 106 Da, mainly consisted of glucose (18.99%), arabinose (22.87%), galactose (26.72%), and galacturonic acid (21.89%). Furthermore, the PCP-100 exhibited high thermal stability and displayed an irregular sheet-like morphology. Its superior reducing power and free radical scavenging ability implied its significant antioxidant activity in vitro. Collectively, these findings provide important insights for the future application of P. chinense polysaccharides in the food industry.

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Extractions and rheological properties of polysaccharide from okra pulp under mild conditions

Cited by 28 publications

References 63 publications

Physicochemical and rheological properties of Tremella fuciformis polysaccharide fractions by ethanol precipitation

Physicochemical and rheological properties of Tremella fuciformis polysaccharide fractions by ethanol precipitation

A novel pectic polysaccharide-based hydrogel derived from okra (Abelmoschus esculentusL. Moench) for chronic diabetic wound healing

Extraction, Rheological, and Physicochemical Properties of Water-Soluble Polysaccharides with Antioxidant Capacity from Penthorum chinense Pursh

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