Preventive effect of partially hydrolyzed guar gum on infection of Salmonella enteritidis in young and laying hens

Ishihara, Noriyuki; Chu, Djong-Chi; Akachi, Shigehiro; Juneja, Lekh Raj

doi:10.1093/ps/79.5.689

Cited by 45 publications

(31 citation statements)

References 36 publications

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“…β-mannanase hydrolyzes β-1, 4-glycosidic bonds in β-mannans (Ooi and Kikuchi, 1995). Hydrolysis of guar gum galactomannan produces mannooligosaccharides which can improve growth performance of birds by inhibiting Salmonellae and E. coli colonization (Ishihara et al, 2000). It also decreases β-mannan levels in GI tract which increase stimulation of innate immune response as presented in Figure 2 ( Jackson et al, 2004).…”

Section: Methods To Improve the Nutritive Value Of Guar Mealmentioning

confidence: 99%

Practical Application of Guar (Cyamopsistetragonoloba L. Taub) Meal in Poultry Nutrition

Saeed¹,

Hassan²,

Shah³

et al. 2017

Adv. Anim. Vet. Sci.

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| Guar is a very important legume crop in arid areas of Indian sub-continent. Over the world, India is known as the biggest producer of guar bean by contributing around 90% of the total production. Guar meal is defined as a guar gum by-product which has about 450 gram protein per kilogram. In spite having high protein content, guar meal is not known on a commercial scale but it has received substantial attention for animal feedstuffs. Trypsin inhibitors are the main anti-nutritive factor present in guar; however, these can be ameliorated with the uses of enzymes and heat treatment. Fluctuations in market prices of essential feed ingredients motivated poultry nutritionist to look for alternative valuable replacements for certain feeds. Based on the promising findings of guar meal inclusion in diets, it might be an acceptable feed ingredient in poultry feed. Guar meal can be fed up to 100 g/kg diet without adverse effects on poultry performance. Higher level of guar meal at150 g/kg can be detrimental for broiler and layer birds. Because of increasing the availability of guar beans, opportunities have been expanded for using guar meal as a partial alternative for soybean meal (SBM).The inclusion of guar meal in poultry diets canbe maximized by the addition of some feed additives such as β-mannanases. The present review article presents thatnutritional values of protein and amino acids of guar meal is similar to the SBM and seems to be an attractive feed ingredient in the poultry industry.

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Section: Methods To Improve the Nutritive Value Of Guar Mealmentioning

confidence: 99%

Practical Application of Guar (Cyamopsistetragonoloba L. Taub) Meal in Poultry Nutrition

Saeed¹,

Hassan²,

Shah³

et al. 2017

Adv. Anim. Vet. Sci.

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“…MOSs can also directly inhibit pathogenic microorganisms besides promoting the growth of probiotic microorganisms [7]. The inhibitory effects of oligosaccharides on pathogens are due to the direct interaction with human mucosal receptors and hence blocking of the bacterial binding sites.…”

Section: Introductionmentioning

confidence: 99%

“…The inhibitory effects of oligosaccharides on pathogens are due to the direct interaction with human mucosal receptors and hence blocking of the bacterial binding sites. Therefore, this process improved the elimination of these bacteria during excretion rather than their binding to mucosal receptors [7,8]. It has been reported that the fructo-oligosaccharides have a potential role as antitumorigenic agents; for example, fructo-oligosaccharides isolated from apple showed induced apoptosis in colon cancer cells and cell cycle arrest in S phase [9].…”

Section: Introductionmentioning

confidence: 99%

Recovery and Purification of Oligosaccharides from Copra Meal by Recombinant Endo-β-mannanase and Deciphering Molecular Mechanism Involved and Its Role as Potent Therapeutic Agent

et al. 2014

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Production of manno-oligosaccharides (MOSs) from pretreated and defatted copra meal (dFCO) hydrolysis was achieved by endo-mannanase. Structural characterization of dFCO by FT-IR and NMR exhibited resemblance with galactomannan. The time-dependent hydrolysis of dFCO by recombinant endo-β-(1 → 4)-mannanase of Clostridium thermocellum by TLC and HPAEC displayed the release of mannose and MOSs mannobiose and mannotriose. Purified MOSs yielded 40 % mannobiose and 18 % mannotriose confirmed by mass spectroscopy which showed mannobiose (m/z = 365) and mannotriose (m/z = 527). The homology based structural analysis of catalytic endo-mannanase (CtManT) showed the catalytic core composed of Glu181 and Glu300 acting as acid/base and Glu288 as a nucleophile during galactomannan hydrolysis. Sub-site mapping of CtManT exhibited two aglycone and four glycone sites at cleavage sites existing on either side of β-(1 → 4)-linkage of galactomannan. Isolated MOSs displayed potential prebiotic characteristics and supported higher growth of probiotic Lactobacillus acidophilus and Bifidobacterium infantis than with standard inulin. Moreover, MOSs displayed over 97 % tolerance to simulated gastric juice, intestinal fluid, and α-amylase proving its potential as a stable prebiotic over inulin. In vitro cytotoxicity assay of MOSs (500 µg/mL) on human epithelial colorectal adenocarcinoma cell line (HT-29) demonstrated 60 % decreased viability of cells after 48 h displaying anti-tumorigenic property.

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“…The inhibitory effect of oligosaccharides can, however, also be directly through interaction and hence blocking of the bacterial binding sites. This leads to the elimination of these bacteria with the digesta flow rather than their binding to mucosal receptors (Ishihara et al 2000;Naughton et al 2001;Spring et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Selection and characterization of mannanase-producing bacteria useful for the formation of prebiotic manno-oligosaccharides from copra meal

Titapoka

Keawsompong

Haltrich

et al. 2007

World J Microbiol Biotechnol

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In order to select bacterial strains effectively secreting mannanase activity for the production of prebiotic mannooligosaccharides, a two-step screening procedure was performed. Enriched cultures from isolation medium containing copra meal were primary screened on an isolation agar medium containing 1% locust bean gum (LBG), which resulted in 48 mannanase-producing bacterial isolates with significant clearing zones on the mannan-containing agar. However, only nine isolates showed appreciable mannanase activities against copra meal in their culture supernatants (0.054-0.185 U/mg of protein) as determined in a standard assay based on the detection of reducing sugars released from this substrate. The isolates CW2-3 and ST1-1 displayed the highest activity against LBG and copra meal, respectively. Copra mannan hydrolysates that were obtained by using crude mannanase from these nine isolates were further used for a secondary screening towards a growth-enhancing activity on Lactobacillus reuteri and inhibitory activity against Escherichia coli as well as Salmonella Enteritidis, resulting in 0.09-2.15 log CFU/ml enhancing activity and low inhibitory activity of 0.46-1.78 log CFU/ml as well as 0.37-1.72 log CFU/ml, respectively. The hydrolysate of CW2-3 mannanase showed the highest enhancing activity of 2.15 log CFU/ml while isolate ST1-1 was most effective with respect to growth inhibition against E. coli E010 and S. Enteritidis S003 with 0.76 and 1.61 log CFU/ml, respectively. Based on morphological, physical, biochemical and genetics properties, isolates CW2-3 and ST1-1 were identified as Klebsiella oxytoca and Acinetobacter sp., respectively. Crude mannanase activity from these two strains was characterized preliminarily. The pH optima of mannanase activity from Klebsiella oxytoca CW2-3 and Acinetobacter sp. ST1-1 were 7 and 6, respectively. The enzymes were stable at 4°C over a pH range of 3-6 and 3-10, respectively.

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Preventive effect of partially hydrolyzed guar gum on infection of Salmonella enteritidis in young and laying hens

Cited by 45 publications

References 36 publications

Practical Application of Guar (Cyamopsistetragonoloba L. Taub) Meal in Poultry Nutrition

Practical Application of Guar (Cyamopsistetragonoloba L. Taub) Meal in Poultry Nutrition

Recovery and Purification of Oligosaccharides from Copra Meal by Recombinant Endo-β-mannanase and Deciphering Molecular Mechanism Involved and Its Role as Potent Therapeutic Agent

Selection and characterization of mannanase-producing bacteria useful for the formation of prebiotic manno-oligosaccharides from copra meal

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