scholarly journals Some factors affecting silage fermentation. 2. Influence of degree of laceration and of the bacterial flora from the grass.

1959 ◽  
Vol 7 (3) ◽  
pp. 237-241
Author(s):  
G.W. Wieringa
Keyword(s):  
Acetic Acid ◽  
Butyric Acid ◽  
Sugar Content ◽  
Bacterial Flora ◽  
The Other ◽  
Acid Fermentation ◽  
Factors Affecting ◽  
Silage Fermentation ◽  
Silage Quality ◽  
Butyric Acid Fermentation

In laboratory-scale ensiling experiments, a relationship was demonstrated between the degree of laceration of the herbage and the amount of butyric acid produced. After a certain degree of laceration, specific for each forage sample, had been exceeded, butyric acid fermentation was suppressed. There was no correlation between the sugar content of the grass and the effect of laceration on silage quality. Inoculation of mown or lacerated grass with Streptobacterium plantarum or S. casei, but not with Betabacterium breve, resulted in improved silage quality, compared with where the grass was not inoculated. Lacerating or mincing the non-inoculated material also improved preservation. It was concluded that the effect of the microflora initially present on the course of silage fermentation decreases as the degree of laceration increases. Silages made from uninoculated material or from material inoculated with B. breve contained more acetic acid than did the other inoculated silages.-R.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)

The effect of wilting on butyric acid fermentation in silage.

1958 ◽  
Vol 6 (3) ◽  
pp. 204-210 ◽  
Author(s):  
G.W. Wieringa
Keyword(s):  
Lactic Acid ◽  
Osmotic Pressure ◽  
Butyric Acid ◽  
Ion Concentration ◽  
Acid Fermentation ◽  
Silage Fermentation ◽  
Lactic Acid Content ◽  
Vitro Development ◽  
Butyric Acid Fermentation

A comparatively slight increase in environmental osmotic pressure inhibited the in vitro development of butyric-acid bacteria [Clostridium spp.], especially with increasing H-ion concentration. Sub-lethal concentrations of salt (NaCl, KCl, Na2SO4) and/or H-ions retarded the start of clostridial development and reduced the quantity of butyric acid produced. In wilted grass silage it was shown that osmotic pressure plays a considerable part in repressing butyric-acid fermentation in the initial stages of silage fermentation. Low temperature (< 20-25 degrees C.), low pH (< 4.2), high lactic-acid content and high osmotic pressure were more harmful to clostridia than to lactic-acid bacteria.-R.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Butyric Acid Fermentation during Ensiling of Wilted Maize Stover for Efficient Methane Production

2020 ◽  
Vol 8 (17) ◽  
pp. 6713-6721 ◽  
Author(s):  
Xian Cui ◽  
Hui Sun ◽  
Mostafa Sobhi ◽  
Xinxin Ju ◽  
Jianbin Guo ◽  
...  
Keyword(s):  
Butyric Acid ◽  
Methane Production ◽  
Acid Fermentation ◽  
Maize Stover ◽  
Butyric Acid Fermentation

scholarly journals Butyric Acid Fermentation in Xylose and Glucose by Clostridium tyrobutyricum

BioResources ◽  
2017 ◽  
Vol 12 (2) ◽  
Author(s):  
Guanghong Luo ◽  
Ling Zhang ◽  
Tianren Chen ◽  
Wenqiao Yuan ◽  
Yingxi Geng
Keyword(s):  
Butyric Acid ◽  
Clostridium Tyrobutyricum ◽  
Acid Fermentation ◽  
Butyric Acid Fermentation

scholarly journals Impact of Alkaline Pretreatment to Enhance Volatile Fatty Acids (VFAs) Production from Rice Husk

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Qian Fang ◽  
Sinmin Ji ◽  
Dingwu Huang ◽  
Zhouyue Huang ◽  
Zilong Huang ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Acetic Acid ◽  
Propionic Acid ◽  
Butyric Acid ◽  
Rice Husk ◽  
Volatile Fatty Acids ◽  
Alkaline Pretreatment ◽  
Rice Husks ◽  
Acid Fermentation ◽  
Study Results

This study explores the use of alkaline pretreatments to improve the hydrolyzation of rice husks to produce volatile fatty acids (VFAs). The study investigated the effects of reagent concentration and pretreatment time on protein, carbohydrates, and dissolved chemical oxygen demand (SCOD) dissolution after the pretreatment. The optimum alkaline pretreatment conditions were 0.30 g NaOH (g VS)−1, with a reaction time of 48 h. The experimental results show that when comparing the total VFA (TVFA) yields from the alkaline-pretreated risk husk with those from the untreated rice husk, over 14 d and 2 d, the maximum value reached 1237.7 and 716.0 mg·L−1 with acetic acid and propionic acid and with acetic acid and butyric acid, respectively. After the alkaline pretreatment, TVFAs increased by 72.9%; VFA accumulation grew over time. The study found that alkaline pretreatment can improve VFA yields from rice husks and transform butyric acid fermentation into propionic acid fermentation. The study results can provide guidelines to support the comprehensive utilization of rice husk and waste treatment.

scholarly journals Butyric Acid Fermentation. (Part I)

1942 ◽  
Vol 18 (4) ◽  
pp. 339-350
Author(s):  
Toshinobu ASAI ◽  
Eitaro KOMATSU ◽  
Noboru MIYAJI
Keyword(s):  
Butyric Acid ◽  
Acid Fermentation ◽  
Butyric Acid Fermentation

Butyric acid fermentation in a fibrous bed bioreactor with immobilized Clostridium tyrobutyricum from cane molasses

2009 ◽  
Vol 100 (13) ◽  
pp. 3403-3409 ◽  
Author(s):  
Ling Jiang ◽  
Jufang Wang ◽  
Shizhong Liang ◽  
Xiaoning Wang ◽  
Peilin Cen ◽  
...  
Keyword(s):  
Butyric Acid ◽  
Clostridium Tyrobutyricum ◽  
Acid Fermentation ◽  
Cane Molasses ◽  
Fibrous Bed Bioreactor ◽  
Butyric Acid Fermentation

scholarly journals Studies on Hormonal Effects on Rooting of Marcotting and Stem-Cuttings of Akee Apple (Blighia sapida K. D. Koenig)

2016 ◽  
Vol 8 (4) ◽  
pp. 468-471 ◽  
Author(s):  
Ehoniyotan Olayemi IBUKUN
Keyword(s):  
Acetic Acid ◽  
Butyric Acid ◽  
Vegetative Propagation ◽  
Callus Formation ◽  
Hormonal Treatment ◽  
The Other ◽  
Naphthalene Acetic Acid ◽  
Naphthaleneacetic Acid ◽  
Stem Cuttings ◽  
Hormonal Treatments

The effect of hormone on the rooting of stem-cuttings and marcotting of akee apple was studied using a combination between Indole -3- Butyric Acid (IBA) and 1- Naphthalene Acetic Acid (NAA). Stem-cuttings from mature akee trees from Challenge, Jalala and Ganmo in Ilorin, were treated with different dilutions of the liquid hormone in the combination of 1.0% Indole-3- butyric acid + 0.5% 1-Naphthaleneacetic acid before propagating them in a non-mist propagator. Marcotting was also carried-out on trees, using the hormonal combination of different dilutions. Observations and the results obtained revealed that the hormonal combination had significant effect on the rooting of stem-cuttings and marcotting. Both marcotting and stem cuttings did not produce at the end of the experiment roots in the absence of the hormonal treatment; a particular aspect was marcotting that initials produced roots. On the other hand, both marcotting and stem cuttings produced roots with the hormonal treatments; more roots were produced using the combination of 2,000 ppm of IBA and 1,000 ppm of NAA, compared with lower concentrations of the hormone mixtures. After callus formation, 2,000 ppm of IBA and 1,000 ppm of NAA combination gave the best results within stem-cuttings. Based on the results obtained, it was concluded that the combination of IBA and NAA in appropriate concentration promoted rooting in Akee apple and therefore are highly valuable for the vegetative propagation of this species through stem cutting and marcotting.

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