Biocontrol efficacy of Wickerhamomyces anomalus in moist maize storage

Niba, Aziwo Tatanja; Leong, Su-lin L.; Olstorpe, Matilda

doi:10.5897/ajb2014.13755

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…W. anomalus was dominant in all silages at intermediate periods of fermentation, with a small participation of other genera. Other reports have shown that a mixed culture of selected yeasts and an LAB can be used as a biocontrol agent in silage to improve silage quality, because the mixed culture of yeasts could reduce the oxygen content and compete with the fungus for nutrition and space in the silage (Niba et al, 2014). However, regarding the fungal communities in silage fermentation, the data obtained from functional profiles of fungal communities are unclear and should be further validated through metabolomics.…”

Section: Discussionmentioning

confidence: 99%

Exploring the differences between sole silages of gramineous forages and mixed silages with forage legumes using 16S/ITS full-length sequencing

Lai

Wang²,

Yan³

et al. 2023

Front. Microbiol.

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Background/ObjectiveSilage characteristics of grass materials directly affect their silage qualities. To expand the source of silage raw materials and develop mixed silages underlined by exploring the positive interactions between forage grasses and legumes, three gramineous grasses, Napier grass (Pennisetum purpureum), king grass (Pennisetum sinese), and forage maize (Zea mays) were separately mixed ensiled with a combination of four forage legumes including Medicago sativa, Vicia villosa, Vicia sativa, and Trifolium repens.MethodsThe chemical composition and fermentation quality of the mixed silages were analyzed and compared with those of the sole silages of these three grasses, as well as the diversity of microbial communities, through the 16S/ITS full-length sequencing.ResultsThe results showed that the inclusion of forage legumes could somewhat improve the fermentation quality, as indicated by significantly (p < 0.05) higher crude protein and lactic acid contents while lower neutral detergent fiber, acid detergent fiber contents and pH values, compared with the sole silages. Among the three types of mixed silages, the mixed king grass had the highest dry matter and crude protein content as well as lowest neutral detergent fiber and acid detergent fiber content. Meanwhile, the bacterial and fungal communities in the mixed silages were influenced by increased the relative abundance of lactic acid bacteria, which inhibited the proliferation of undesirable bacteria, such as Hafnia alvei, Enterobacter cloacae, and Serratia proteamaculanss. Co-occurrence networks identified 32 nodes with 164 positive and 18 negative correlations in bacteria and 80 nodes with two negative and 76 positive correlations in fungi during fermentation.ConclusionInclusion of forage legume to grasses can improve the fermentation quality and optimize the structure of microbial community, which appears to be a feasible strategy to enhance the forage resource utilization.

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Section: Discussionmentioning

confidence: 99%

Exploring the differences between sole silages of gramineous forages and mixed silages with forage legumes using 16S/ITS full-length sequencing

Lai

Wang²,

Yan³

et al. 2023

Front. Microbiol.

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Effect of low-cost substrate on the fatty acid profiles of Mortierella alpina CBS 754.68 and Wickerhamomyces siamensis SAKSG

Samadlouie

Nurmohamadi

Moradpoor

et al. 2018

Biotechnology & Biotechnological Equipment

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Fungi and yeast species as good sources of arachidonic acid and polyunsaturated fatty acids have been attracting a lot of attention from scientists in recent years. In this study, we used the oleaginous yeast Wickerhamomyces siamensis SAKSG isolated from the gills of trout caught from the Caspian Sea. Low-cost polysaccharides hydrolyzed by enzymatic digestion of immobilized whole cells of Bacillus amyloliquefaciens ATCC 23350 served as substrates to evaluate the effects of each on the biomass and the fatty acid profiles of Mortierella alpina CBS 754.68 and Wickerhamomyces siamensis SAKSG. By using sprouted wheat, millet and wheat as starch sources adjusted to 150 g/L we obtained reducing sugar content of 102.57, 57.50 and 51.62 g/L, respectively. The highest and lowest dry weight (biomass) of M. alpina was obtained in sprouted wheat (3.7% of media) and rice-formulated media (1.72% of media), respectively. Each formulated media significantly affected the profiles of M. alpina fatty acids. The highest content of linoleic acid (41.873%), oleic acid (30.061%) and arachidonic acid (27.054%) was obtained with corn, rice and potatoes used as the carbon sources. The yeast lipid content was high, consisting of C6 up to C12 fatty acids, accounting for about 55.7% of the total fatty acids. Some amount of docosahexaenoic acid (DHA) and (ecosapentanoic acid) EPA was also observed in W. siamensis.

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Biocontrol efficacy of Wickerhamomyces anomalus in moist maize storage

Abstract: White maiz without ino harvest and which high throughout decline in E hygiene. Th 2 months; n compared mycotoxin parameters uninoculate aspartic ac serine and poor surviv Key words: TRODUCTION ize is one of world. In Su th humans a ongs to the gal infection. cotoxins, not rage. Mycoto

Cited by 2 publications

References 12 publications

Exploring the differences between sole silages of gramineous forages and mixed silages with forage legumes using 16S/ITS full-length sequencing

Exploring the differences between sole silages of gramineous forages and mixed silages with forage legumes using 16S/ITS full-length sequencing

Effect of low-cost substrate on the fatty acid profiles of Mortierella alpina CBS 754.68 and Wickerhamomyces siamensis SAKSG

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