Production of xylooligosaccharides from corncob using a crude thermostable endo-xylanase from Streptomyces thermovulgaris TISTR1948 and prebiotic properties

Boonchuay, Pinpanit; Techapun, Charin; Seesuriyachan, Phisit; Chaiyaso, Thanongsak

doi:10.1007/s10068-014-0207-0

Cited by 45 publications

(14 citation statements)

References 27 publications

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“…This chemical composition was similar to some previously reported values in the literature (Garrote et al, 2007;Michelin et al, 2012a;Xie et al, 2014;Michelin and Teixeira 2016). On the other hand, some authors reported corncob presenting 40.38%-42.6% cellulose, 39.04%-46% hemicellulose, and 7.26%-7.56% lignin (Boonsombuti et al, 2013;Boonchuay et al, 2014). These results reflect the difference in corncob biomass itself, which depend on the climate and the agro-technical conditions.…”

Section: Chemical Composition Of Untreated and Lhw Pretreated Corncobsupporting

confidence: 90%

Multi-step approach to add value to corncob: Production of biomass-degrading enzymes, lignin and fermentable sugars

Michelin

Ruiz

Polizeli

et al. 2018

Bioresource Technology

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Section: Chemical Composition Of Untreated and Lhw Pretreated Corncobsupporting

confidence: 90%

Multi-step approach to add value to corncob: Production of biomass-degrading enzymes, lignin and fermentable sugars

Michelin

Ruiz

Polizeli

et al. 2018

Bioresource Technology

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“…It should be emphasized that the comparison of the published information on different xylanases is a challenging task since parameters such as the enzyme dosage and purity (especially regarding the presence or absence of xylanolytic auxiliary activities), xylan source, and type of pretreatment vary depending on the report. However, the analysis of data from the literature revealed that the amount of XOS produced was comparable in yield to that from most of the reported xylanases (Yang et al 2005;Bragatto et al 2013;Boonchuay et al 2014;Rajagopalan et al 2017). In addition, a negligible amount of monomeric xylose was released from production, which is the main advantage of the enzymatic production of XOS as compared with physicochemical approaches.…”

Section: Cellulosementioning

confidence: 78%

Production of prebiotic xylooligosaccharide from aqueous ammonia‐pretreated rice straw by β‐xylosidase of Weissella cibaria

2019

J Appl Microbiol

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Aims This study focuses on the development of a new strategy xylooligosaccharide (XOS) production from aqueous ammonia‐pretreated rice straw (A‐PRS), followed by β‐xylosidase hydrolysis produced by the newly identified strain Weissella cibaria FB069. Methods and Results We report a higher efficiency of A‐PRS, including the removal of lignin and increase in cellulose and xylan content, compared to that of the alkali and stream explosion methods. Using the ammonia pretreatment method, rice straw was used to obtain 32·4% xylan. The crude xylanase from W. cibaria was used to hydrolyse A‐PRS over different hydrolysis times. The highest XOS yield (131 mg XOS per gram rice straw) was observed after 10 h. XOS produced from the PRS was tested on stimulation effect on Bifidobacterium and Lactobacillus. Conclusion The possibility of XOS production from PRS using β‐xylosidase with strong prebiotic properties. Significance and Impact of the Study We investigated the new strain for signification production of XOS. The two‐stage process here described could help to further explore the optimization conditions for prebiotic production. Additionally, the stimulation effect of XOS from alternative source has a promising prospect in functional food.

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“…3B and C). Streptomyces thermovulgaris was previously isolated from human fecal samples [41,42] and can be probiotics since its thermostable endo-xylanase is able to produce xylooligosaccharides (XOs) from corncob [43]. XOs from fruits and vegetables are beneficial to animal health through enhancing the population of bacteria that produce short chain fatty acids [44].…”

Section: Isolation Of Lds From a Gut Bacteriummentioning

confidence: 99%

Identification of Lipid Droplets in Gut Microbiota

Zhang

Zhou

et al. 2020

Preprint

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Recent research has accumulating evidence to support that gut microbiota can be a newly discovered organ/tissue for humans. Although the functions of gut microbiota have been linked to almost all aspects of human physiological, most findings so far are still either belonged to correlational research or at preliminary stage of causal study due to the complexity of gut microbiota as well as lack of proper tools and methods. Thus, development of new approaches is essential and necessary. Lipid droplet is a cellular organelle governing cell lipid homeostasis that is directly related to human metabolic syndromes. Previously we and other groups found lipid droplets in several bacterial strains. We wonder if gut bacteria have lipid droplets. If so, these bacteria may play key roles to regulate gut lipid content, remove unnecessary lipids and produce useful lipid molecules for host. Here we identified lipid droplet-like structures in freshly isolated bacteria from mouse small and large intestines, as well as mouse and human feces. We also purified and analyzed lipid droplets from a cloned human gut bacterium Streptomyces thermovulgaris. Together, we demonstrate the existence of lipid droplets in gut microbiota and established an approach to study them. Results and Discussion LD-like structures in intestinal bacteriaRecent studies of gut microbiota have developed extremely fast and their composition and products have been associated with human physical and mental health [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Several sophistic approaches have been established to study gut microbiota, including high-throughput 16S rRNA sequencing, metagenomics, and massive bacterial cloning [19][20][21][22][23][24][25][26][27]. Since the number and species of gut microbiota are too huge, the resulting complexity is an obscure that makes their functions remain

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Production of xylooligosaccharides from corncob using a crude thermostable endo-xylanase from Streptomyces thermovulgaris TISTR1948 and prebiotic properties

Cited by 45 publications

References 27 publications

Multi-step approach to add value to corncob: Production of biomass-degrading enzymes, lignin and fermentable sugars

Multi-step approach to add value to corncob: Production of biomass-degrading enzymes, lignin and fermentable sugars

Production of prebiotic xylooligosaccharide from aqueous ammonia‐pretreated rice straw by β‐xylosidase of Weissella cibaria

Identification of Lipid Droplets in Gut Microbiota

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