Enzymatic Production of Xylooligosaccharides from Brown Coconut Husk Treated with Sodium Hydroxide

Jnawali, Prakriti; Kumar, Vikas; Tanwar, Beenu; Hirdyani, Harsha; Gupta, Prerna

doi:10.1007/s12649-017-9963-4

Cited by 53 publications

(15 citation statements)

References 38 publications

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“…Nevertheless, although examples of direct enzymatic hydrolysis without previous chemical or thermal pretreatment of the biomass can be referred [239,240], most researchers report pretreatments. Although acid and alkaline hydrolysis [241][242][243], even with additional microwave-assisted processing [244], have been employed as pretreatments, the combination of an initial autohydrolysis step followed by the enzymatic hydrolysis of the obtained xylan can be mentioned as a more promising option [106,245,246].…”

Section: Xylo-oligosaccharides (Xoss)mentioning

confidence: 99%

A Bibliometric Study of Scientific Publications regarding Hemicellulose Valorization during the 2000–2016 Period: Identification of Alternatives and Hot Topics

Abejón

2018

ChemEngineering

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A bibliometric analysis of the Scopus database was carried out to identify the research trends related to hemicellulose valorization from 2000 to 2016. The results from the analysis revealed an increasing number of annual publications, a high degree of transdisciplinary collaboration and prolific contributions by European researchers on this topic. The importance of a holistic approach to consider the simultaneous valorization of the three main components of lignocellulosic biomass (cellulose, hemicellulose and lignin) must be highlighted. Optimal pretreatment processes are critical for the correct fractionation of the biomass and the subsequent valorization. On the one hand, biological conversion of sugars derived from hemicellulose can be employed for the production of biofuel (ethanol) or chemicals such as 2,3-butadiene, xylitol and lactic acid. On the other hand, the chemical transformation of these sugars produces furfural, 5-hydroxyfurfural and levulinic acid, which must be considered very important starting blocks for the synthesis of organic derivatives.

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Section: Xylo-oligosaccharides (Xoss)mentioning

confidence: 99%

A Bibliometric Study of Scientific Publications regarding Hemicellulose Valorization during the 2000–2016 Period: Identification of Alternatives and Hot Topics

Abejón

2018

ChemEngineering

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“…This destruction is caused by the disruption of the hydrogen bonds with the alkaline reagent ( 18 ). In order to enhance the xylan content recovery from hemicellulose, use of appropriate alkaline concentration and pretreatment parameters are the primary conditions ( 19 ). For example, the use of higher concentration of alkali solution (15%) for extracting pineapple peels led to maximum recovery of hemicellulose.…”

Section: Preparation and Characterization Of Xosmentioning

confidence: 99%

“…Kim et al documented that a glycosynthase derived from a retaining xylanase could synthesize a great variety of XOS ( 25 ). Many factors affect the yield of XOS from xylan such as the enzyme activity, the raw material, and incubation conditions including incubation pH, reaction time and temperature ( 19 ).…”

Section: Preparation and Characterization Of Xosmentioning

confidence: 99%

Xylo-Oligosaccharides, Preparation and Application to Human and Animal Health: A Review

et al. 2021

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Xylo-oligosaccharides (XOS) are considered as functional oligosaccharides and have great prebiotic potential. XOS are the degraded products of xylan prepared via chemical, physical or enzymatic degradation. They are mainly composed of xylose units linked by β-1, 4 bonds. XOS not only exhibit some specific physicochemical properties such as excellent water solubility and high temperature resistance, but also have a variety of functional biological activities including anti-inflammation, antioxidative, antitumor, antimicrobial properties and so on. Numerous studies have revealed in the recent decades that XOS can be applied to many food and feed products and exert their nutritional benefits. XOS have also been demonstrated to reduce the occurrence of human health-related diseases, improve the growth and resistance to diseases of animals. These effects open a new perspective on XOS potential applications for human consumption and animal production. Herein, this review aims to provide a general overview of preparation methods for XOS, and will also discuss the current application of XOS to human and animal health field.

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“…The aliquots were centrifuged at x10000 rpm for 20 min and the pellets were washed twice with distilled water, lyophilized, homogenized and stored at 20°C until further usage. The maximum recovery of xylan from the sample (True yield) and hemicellulose (Relative yield) can be calculated using the following formulae (Jnawali et al 2018) (Samanta et al 2014) and it was vacuum filtered using G3 sintered crucible filter and the filtrate was analyzed for its non-reducing sugar (XOS) by Lane and Eyon chemical method The optimization study was designed using by Design expert software version 11.…”

Section: Extraction Of Xylan By Alkali (Koh and Naoh) Treatmentmentioning

confidence: 99%

Utilization of Agricultural Waste for the Production of Xylooligosaccharides Using Response Surface Methodology and Their In Vitro Prebiotic Efficacy

Kathiresan

Gopal

Naveenathan

et al. 2021

Preprint

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Air pollution is a prominent problem recently faced in various parts of India due to the burning of stubbles (coconut husk, corn cob, paddy stubbles, sugarcane bagasse, etc.) which are rich in a lignocellulosic component that can be converted into a prebiotic known as Xylooliogsaccaride (XOS). They can be produced by autohydrolysis, acid hydrolysis and enzymatic hydrolysis of xylan. In the present study, Xylan was extracted from sugarcane bagasse using two alkalis (NaOH and KOH) and the yield was compared. Xylooligosaccharide produced by enzymatic hydrolysis and their factors influencing the yield were optimized using Response Surface Methodology. Xylan and Xylooligosaccharide was characterized by FTIR, NMR, XRD, TGA and ESI-MS. Xylooligosaccharides was investigated for their prebiotic potential by in vitro study. The maximum (Relative yield of 86%) yield of xylan was observed in 20% of NaOH. Xylan peaks at 3762cm-1, 3347 cm-1, 2917cm-1 represents the OH and CH stretching of xylan. The main signals at 4.26 (H-1), 3.19 (H-2), 3.59 (H-3), 3.63 (H-4) and 3.98 (H-5) ppm determines the existence of xylan. The higher amount of XOS is pH 4.75, temperature 45°C, enzyme 4U/ml and for time of 16h. The spectrum of 5.0-5.40ppm and 4.30-4.60ppm represents the α anomeric and β anomeric protons in XOS. They are resistant digested and the reaching percentage to the intestine is 95% unhydrolyzed. The maximum prebiotic index was noted in L.plantarum (1.92) and L.fermentum (1.61). The highest prebiotic index and score was observed in L.plantarum (1.9) and L.fermentum (17). The maximum bacteriocin production of Enterococcus faecium against E.fecalis (13mm) and Streptococcus pyogenes (11mm). Therefore, utilization of agricultural residues for a value-added product not only shows a great impact on environmental issues but also could double the farmer’s income

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Enzymatic Production of Xylooligosaccharides from Brown Coconut Husk Treated with Sodium Hydroxide

Cited by 53 publications

References 38 publications

A Bibliometric Study of Scientific Publications regarding Hemicellulose Valorization during the 2000–2016 Period: Identification of Alternatives and Hot Topics

A Bibliometric Study of Scientific Publications regarding Hemicellulose Valorization during the 2000–2016 Period: Identification of Alternatives and Hot Topics

Xylo-Oligosaccharides, Preparation and Application to Human and Animal Health: A Review

Utilization of Agricultural Waste for the Production of Xylooligosaccharides Using Response Surface Methodology and Their In Vitro Prebiotic Efficacy

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