Effects of Wheat Bran and Porridge Oats on Hepatic Portal Venous Volatile Fatty Acids in the Pig

1985 ◽  
Vol 29 (6) ◽  
pp. 325-331 ◽  
Author(s):  
D.L. Topping ◽  
R.J. Illman ◽  
M.N. Taylor ◽  
G.H. McIntosh
Keyword(s):  
Fatty Acids ◽  
Wheat Bran ◽  
Volatile Fatty Acids ◽  
Hepatic Portal

scholarly journals Comparative effects of dietary wheat bran and its morphological components (aleurone and pericarp-seed coat) on volatile fatty acid concentrations in the rat

1987 ◽  
Vol 57 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Bing-Qin Cheng ◽  
Rodney P. Trimble ◽  
Richard J. Illman ◽  
Bruce A. Stone ◽  
David L. Topping
Keyword(s):  
Seed Coat ◽  
Wheat Bran ◽  
Volatile Fatty Acids ◽  
Male Rats ◽  
Electrostatic Separation ◽  
Hepatic Portal ◽  
Apparent Susceptibility ◽  
Very High ◽  
Bacterial Mass ◽  
Venous Plasma

1. Adult male rats were fed on diets containing 100 g dietary fibre/kg either as α-cellulose or wheat bran or the pericarp-seed coat or aleurone layers prepared from that bran by sequential milling and air elutriation and electrostatic separation.2. After 10 d, concentrations of total volatile fatty acids (VFA) in caecal fluid were significantly different between groups and fell in the order: aleurone > wheat bran > pericarp-seed coat > cellulose. This ranking probably reflected the ease of fermentation of fibre polysaccharides by colonic bacteria which also resulted in a considerably higher faecal bacterial mass in the aleurone group.3. Because of the differences in the volume of caecal digesta, the mass of caecal VFA was considerably the highest in the aleurone group, intermediate with wheat bran and equally low in the pericarp-seed coat and cellulose groups.4. The diet based on aleurone gave a relatively higher proportion of propionate but with both pericarp-seed coat and wheat bran the contribution of butyrate was raised.5. VFA concentrations in hepatic portal venous plasma were proportional to caecal concentrations with very high (> 3 mM) values being recorded in the aleurone group.6. The findings are discussed in relation to the apparent susceptibility of the morphological components of wheat bran to fermentation by large bowel bacteria.

scholarly journals The digestion of fibre by pigs

1985 ◽  
Vol 53 (3) ◽  
pp. 531-536 ◽  
Author(s):  
George Stanogias ◽  
G. R. Pearce
Keyword(s):  
Fatty Acids ◽  
Wheat Bran ◽  
Volatile Fatty Acids ◽  
Proximal Colon ◽  
Marked Influence ◽  
Neutral Detergent Fibre ◽  
Maize Cobs

1. The effect of including lupin (Lupinus sp.) hulls, maize cobs, wheat bran and lucerne (Medicago sutiva) stems in a basal fibre-free diet on the concentrations and the relative proportions of volatile fatty acids (VFA) in the proximal colon of pigs, 17–18 h after feeding, was studied.2. Concentrations of total VFA in the proximal colon increased with increasing levels of neutral-detergent fibre (NDF) intake, and this increase was highly dependent on the source of NDF in the diet.3. Molar proportions of the VFA were significantly affected by the level of NDF intake only in the cases of acetic and butyric acids, whereas the source of dietary NDF had a marked influence on the molar proportions of all acids.4. The results indicate that the extent of fermentative breakdown of fibre in the pig intestine can be influenced substantially by the type and the level of fibre in the diet.

scholarly journals Nematicidal activity of volatile fatty acids generated from wheat bran in reductive soil disinfestation

2009 ◽  
Vol 39 (2) ◽  
pp. 53-62 ◽  
Author(s):  
Masahiko Katase ◽  
Chikako Kubo ◽  
Shingo Ushio ◽  
Eiichi Ootsuka ◽  
Taeko Takeuchi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Wheat Bran ◽  
Volatile Fatty Acids ◽  
Nematicidal Activity ◽  
Soil Disinfestation

scholarly journals Effects of solvent extraction on the hypocholesterolaemic action of oat bran in the rat

1991 ◽  
Vol 65 (3) ◽  
pp. 435-443 ◽  
Author(s):  
Richard J. Illman ◽  
David L. Topping ◽  
Kerin Dowling ◽  
Rodney P. Trimble ◽  
Gordon R. Russell ◽  
...  
Keyword(s):  
Wheat Bran ◽  
Volatile Fatty Acids ◽  
Cholesterol Metabolism ◽  
Plasma Cholesterol ◽  
Tocopherol Content ◽  
Male Rats ◽  
Cholesterol Feeding ◽  
Oat Bran ◽  
Hepatic Portal Vein ◽  
Hepatic Portal

In adult male rats fed on a cholesterol-free synthetic diet, plasma cholesterol concentrations were lowest with oat bran, intermediate with cellulose and highest with wheat bran. Plasma triacylglycerols (TAG) were similar with wheat bran and cellulose but higher with oat bran. The concentrations and pools of caecal volatile fatty acids (VFA) were lowest with cellulose and equally higher with oat bran and wheat bran. Plasma VFA concentrations in the hepatic portal vein reflected those in caecal digesta and were unrelated to plasma cholesterol. Feeding oat bran after extraction with n-pentane gave plasma cholesterol concentrations similar to that found with wheat bran. Reconstitution of oat bran with extracted lipids did not restore the cholesterol-lowering effect. Addition of the extracted material to a wheat-bran diet had no effect on plasma cholesterol. Plasma TAG were higher with the oat bran and reconstituted-oatbran diets than with wheat-bran or cellulose diets. However, extracted oat bran+safflower oil gave similar TAG concentrations to that with wheat bran. These extractions and additions did not change caecal bile acid or neutral sterol concentrations. Effects of these diets on plasma cholesterol were unrelated to their tocotrienol or tocopherol content. Addition of n-pentane to oat bran followed by evaporation of solvent gave plasma cholesterol concentrations that were significantly higher than untreated oat bran but lower than similarly treated wheat bran. It is concluded that oat bran affects cholesterol metabolism through a pentane-soluble component as well as non-starch polysaccharides. It appears that the activity of this lipid is not transferable by simple addition of the solvent extract to the whole diet.

Unravelling a microbial synergy to boost caproate production via carboxylates chain elongation with ethanol

2019 ◽  
Vol 26 (2) ◽  
pp. 63-71
Author(s):  
Ling Leng ◽  
Ying Wang ◽  
Peixian Yang ◽  
Takashi Narihiro ◽  
Masaru Konishi Nobu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Microbial Consortia ◽  
Chain Elongation ◽  
Desulfovibrio Vulgaris ◽  
Rrna Gene ◽  
Selective Enrichment ◽  
Microbial Network ◽  
Cost Efficient ◽  
Rrna Gene Sequencing

Chain elongation of volatile fatty acids for medium chain fatty acids production (e.g. caproate) is an attractive approach to treat wastewater anaerobically and recover resource simultaneously. Undefined microbial consortia can be tailored to achieve chain elongation process with selective enrichment from anaerobic digestion sludge, which has advantages over pure culture approach for cost-efficient application. Whilst the metabolic pathway of the dominant caproate producer, Clostridium kluyveri, has been annotated, the role of other coexisting abundant microbiomes remained unclear. To this end, an ethanol-acetate fermentation inoculated with fresh digestion sludge at optimal conditions was conducted. Also, physiological study, thermodynamics and 16 S rRNA gene sequencing to elucidate the biological process by linking the system performance and dominant microbiomes were integrated. Results revealed a possible synergistic network in which C. kluyveri and three co-dominant species, Desulfovibrio vulgaris, Fusobacterium varium and Acetoanaerobium sticklandii coexisted. D. vulgaris and A. sticklandii (F. varium) were likely to boost the carboxylates chain elongation by stimulating ethanol oxidation and butyrate production through a syntrophic partnership with hydrogen (H2) serving as an electron messenger. This study unveils a synergistic microbial network to boost caproate production in mixed culture carboxylates chain elongation.

МЕТАБОЛИТЫ ПРОБИОТИЧЕСКИХ БАКТЕРИЙ ОТВЕЧАЮТ ЗА ЭФФЕКТИВНОСТЬ ДЕЙСТВИЯ ПРОБИОТИКА "ПРОФОРТ®"

2019 ◽  
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Broiler Chicks ◽  
Bacillus Sp

МЕЛИКИДИ В.Х., ТЮРИНА Д.Г., СЕЛИВАНОВ Д.Г., НОВИКОВА Н.И. ООО «БИОТРОФ», Санкт-Петербург Аннотация: Приведены данные исследования методом газожидкостной хроматомасс-спектрометрии метаболитов, синтезируемых пробиотическими бактериями, входящими в состав кормовой добавки «Профорт®». Проведен опыт в условиях интенсивного промышленного птицеводства по применению кормовой добавки «Профорт®» (50 тыс. голов бройлеров в группе). Среди метаболитов пробиотических штаммов Enterococcus sp. и Bacillus sp. обнаружены такие полезные вещества, как молочная кислота, уксусная, пропионовая и другие короткоцепочечные (летучие) жирные кислоты, активные пептиды. Результаты зоотехнического опыта показали, что при скармливании бройлерам пробиотика «Профорт®» (500 г/т) живая масса при убое в 40 дней была выше контроля на 6,9%, конверсия корма улучшилась на 3,0%, а европейский индекс продуктивности бройлеров - на 5,69%. Ключевые слова: ПРОБИОТИКИ, МЕТАБОЛИТЫ, ЛЕТУЧИЕ ЖИРНЫЕ КИСЛОТЫ, ЦЫПЛЯТА-БРОЙЛЕРЫ,ПРОДУКТИВНОСТЬ, PROBIOTICS, METABOLITES, VOLATILE FATTY ACIDS, BROILER CHICKS,PRODUCTIVITY

Studies on the Levels of Volatile Fatty Acids for Growing-Fattening Lambs

1962 ◽  
Vol 21 (1) ◽  
pp. 37-40 ◽  
Author(s):  
H. W. Essig ◽  
U. S. Garrigus ◽  
B. Connor Johnson
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids
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