scholarly journals Influences of dietary adaptation and source of resistant starch on short-chain fatty acids in the hindgut of rats

2003 ◽  
Vol 89 (3) ◽  
pp. 319-327 ◽  
Author(s):  
Åsa M. Henningsson ◽  
E. Margareta ◽  
G. L. Nyman ◽  
Inger M. E. Björck
Keyword(s):  
Fatty Acids ◽  
Butyric Acid ◽  
Resistant Starch ◽  
Potato Starch ◽  
Distal Colon ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Adaptation Period ◽  
Adaptation Time ◽  
Chain Fatty Acids

The effect of adaptation time on the concentration and pattern of short-chain fatty acids (SCFA) formed in the hindgut of rats given resistant starch (RS) in the form of raw potato starch (RPS) or high-amylose maize starch (HAS) was evaluated. Each starchy material was tested in diets containing 100 g indigestible carbohydrate/g DM, and fed for 13, 28 and 42 d. At the end of each period, the content of SCFA was determined in caecum, distal colon and faeces. The caecal concentration of total and individual SCFA increased for both diets with increasing adaptation time. The concentration of butyric acid was higher in the group fed RPS than in that fed HAS at all adaptation times. The caecal proportion of butyric acid was low both in rats fed RPS and HAS (6 and 4 %, respectively) following 13 d of adaptation. However, after 28 d of adaptation, the proportion of butyric acid had increased to 19 % in rats given RPS. A longer adaptation period (42 d) did not increase the proportion of butyric acid further. With HAS, there was also a significant (P<0·01) increase in the proportion of butyric acid with longer adaptation time. However, the increase was much slower and the proportion of butyric acid reached 6 and 8 % after 28 and 42 d respectively. It is concluded that the pattern of SCFA formed from RS in rats is dependent on adaptation time. It cannot be excluded that the different patterns of SCFA reported in the literature for RS may be due to the time of adaptation.

scholarly journals Content of short-chain fatty acids in the hindgut of rats fed processed bean (Phaseolus vulgaris) flours varying in distribution and content of indigestible carbohydrates

2001 ◽  
Vol 86 (3) ◽  
pp. 379-389 ◽  
Author(s):  
Åsa M. Henningsson ◽  
E. Margareta ◽  
G. L. Nyman ◽  
Inger M. E. Björck
Keyword(s):  
Fatty Acids ◽  
Phaseolus Vulgaris ◽  
Butyric Acid ◽  
Total Concentration ◽  
Distal Colon ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Low Level ◽  
Retrograded Starch ◽  
Chain Fatty Acids

Red kidney beans (Phaseolus vulgaris) processed to differ in distribution and content of indigestible carbohydrates were used to study hindgut fermentability and production of short-chain fatty acids (SCFA). Bean flours with low or high content of resistant starch (RS), mainly raw and physically-inaccessible starch, were obtained by milling the beans before or after boiling. Flours containing retrograded starch and with a high or low content of oligosaccharides were prepared by autoclaving followed by freeze-drying with or without the boiling water. Six diets were prepared from these flours yielding a total concentration of indigestible carbohydrates of 90 or 120 g/kg (dry weight basis). The total fermentability of the indigestible carbohydrates was high with all diets (80–87 %). Raw and physically-inaccessible starch was more readily fermented than retrograded starch (97–99 %v.86–95 %; P<0·05). Non-starch glucans were fermented to a lesser extent than RS, but the fermentability was higher (P<0·05) in the case of autoclaved (50–54 %) than boiled beans (37–41 %). The distribution between acetic, propionic and butyric acid in the caecum was similar for all diets, with a comparatively high percentage of butyric acid (approximately 18). However, with diets containing the high amounts of RS, the butyric acid concentration was significantly higher in the distal colon than in the proximal colon (P=0·009 and P=0·047 for the high- and low-level diets respectively), whereas it remained constant, or decreased along the colon in the case of the other diets. Furthermore, the two diets richest in RS also promoted the highest percentages of butyric acid in the distal colon (24 and 17v.12 and 12–16 for the high- and low-level diets respectively).

PSIII-12 In vitro Evaluation of Purified Fiber Sources for Production of Short-chain Fatty Acids Using Pig Cecal Content as an Inoculum

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 177-177
Author(s):  
Gabriela E Martinez Padilla ◽  
Rajesh Jha ◽  
Vivek Fellner ◽  
Eric van Heugten
Keyword(s):  
Fatty Acids ◽  
Enzymatic Hydrolysis ◽  
Resistant Starch ◽  
Potato Starch ◽  
Short Chain ◽  
Gas Liquid Chromatography ◽  
Citrus Peel ◽  
Starch Potato ◽  
Chain Fatty Acids

Abstract This study evaluated short-chain fatty acid (SCFA) production from purified fiber sources when fermented in vitro using pig cecal contents as an inoculum. Fiber sources of interest were inulin from chicory root (native and long-chain inulin with 90 and 98% fiber, respectively), pectin from citrus peel (high methoxyl pectin), resistant starch (native starch), potato starch (commercial grade), and β-glucan (β-1,3;β-1,6 yeast-derived). Cellulose and cornstarch were used as indigestible and highly digestible carbohydrates, respectively. Triplicate samples of substrates (2 g) were subjected to enzymatic hydrolysis with pepsin and pancreatin for 6 h. Subsequently, hydrolyzed residues (200 mg) were incubated under anaerobic conditions at 39°C with 30 mL solution of cecal inoculum collected from 3 sows fed a standard commercial diet and buffered mineral solution. After 48 h of incubation, solutions from fermented samples were analyzed for pH, SCFA, and branched-chain fatty acids (BCFA) using gas-liquid chromatography. Enzymatic hydrolysis had no effect on digestion of β-glucan, but total SCFA concentration after fermentation was highest (26.13 mmol/g) followed by resistant starch (22.61 mmol/g) and potato starch (22.20 mmol/g) and was lowest for cellulose (13.91 mmol/g). In contrast, native inulin was highly digested during enzymatic hydrolysis, resulting in the lowest substrate available for fermentation (11.84% DM) and the highest pH (5.98). Enzymatic hydrolysis and fermentation of resistant starch increased (P&lt; 0.001) concentrations of acetate (0.60 mg/g), whereas potato starch and β-glucan yielded more butyrate (0.60 and 0.54 mg/g respectively), and β-glucan resulted in greater (P&lt; 0.001) propionate concentrations (0.69 mg/g). Pectin resulted in the highest fermentation (82.38% DM disappearance) and the lowest pH (4.03) compared to the other fiber sources (P&lt; 0.001) and yielded the lowest BCFA concentration (1.89 mM, P&lt; 0.001). Results suggest that fermentation of resistant starch, potato starch, and β-glucan produced higher SCFA concentrations, while pectin resulted in a decreased pH of fermentation solution.

scholarly journals Fermentation and bulking capacity of indigestible carbohydrates: the case of inulin and oligofructose

2002 ◽  
Vol 87 (S2) ◽  
pp. S163-S168 ◽  
Author(s):  
M. Nyman
Keyword(s):  
Fatty Acids ◽  
Molecular Weight ◽  
Propionic Acid ◽  
Butyric Acid ◽  
Colonic Mucosa ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Acid Formation ◽  
Fresh Weight ◽  
Chain Fatty Acids

The bulking index (i.e. the increase in faecal fresh weight in gram per gram indigestible carbohydrate ingested) with oligofructose and inulin is similar to that produced with other easily fermented fibres such as pectins and gums. Most studies in man have been performed at a level of 15 g/d and more investigations on lower intakes are needed to appoint the least intake for an effect. Concerning short-chain fatty acids (SCFA) most studies have been using oligofructose and points at an increased butyric acid formation in the caecum of rats. In one study on rats with inulin high caecal proportions of propionic acid were obtained. As inulin has a higher molecular weight than oligofructose it might be speculated if this could be a reason to the different SCFA-profile formed. No effects on faecal concentrations of SCFA in humans have been revealed with inulin and oligofructose, which neither is expected as most of the SCFA formed during the fermentation already has been absorbed or utilized by the colonic mucosa.

Impact of Encapsulated Lactobacillus casei 01 Along with Pasteurized Purple-Rice Drinks on Modulating Colon Microbiome using a Digestive Model

2016 ◽  
Vol 12 (7) ◽  
pp. 637-646 ◽  
Author(s):  
Pittaya Chaikham ◽  
Arunee Apichartsrangkoon ◽  
Srivilai Worametrachanon ◽  
Tom Van de Wiele
Keyword(s):  
Fatty Acids ◽  
Lactobacillus Casei ◽  
Distal Colon ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Microbial Ecosystem ◽  
Gelatinized Starch ◽  
Metabolic Activities ◽  
Chain Fatty Acids

Abstract The prospect of Lactobacillus casei 01 and pasteurized purple-rice drinks on modulating colon microbiome by using a simulator of the human intestinal microbial ecosystem was investigated. Accordingly, L. casei 01 alone and with pasteurized purple-rice drink were administered into the proximal and distal colons. In consequence, some colon bacteria and their metabolic activities were examined. The results showed that upon modulating the colon microbiota by L. casei 01 alone with pasteurized germinated-purple-rice drink in the distal colon, acetate and propionate (short-chain fatty acids) were equivalently elevated but other treatments performed differently. Based on the profile of colon microbiota, most treatments stimulated the highest number of lactobacilli followed by bifidobacteria, while other undesirable bacteria were moderately diminished. In overall, larger gelatinized starch in the rice drinks enabled by pasteurization triggered off better modulating impact than by pressurization.

Short-Chain Fatty Acids and Human Colonic Function: Roles of Resistant Starch and Nonstarch Polysaccharides

2001 ◽  
Vol 81 (3) ◽  
pp. 1031-1064 ◽  
Author(s):  
David L. Topping ◽  
Peter M. Clifton
Keyword(s):  
Fatty Acids ◽  
Resistant Starch ◽  
Epidemiological Data ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Indirect Measures ◽  
Electrolyte Uptake ◽  
Colonic Blood Flow ◽  
Nonstarch Polysaccharides ◽  
Chain Fatty Acids

Resistant starch (RS) is starch and products of its small intestinal digestion that enter the large bowel. It occurs for various reasons including chemical structure, cooking of food, chemical modification, and food mastication. Human colonic bacteria ferment RS and nonstarch polysaccharides (NSP; major components of dietary fiber) to short-chain fatty acids (SCFA), mainly acetate, propionate, and butyrate. SCFA stimulate colonic blood flow and fluid and electrolyte uptake. Butyrate is a preferred substrate for colonocytes and appears to promote a normal phenotype in these cells. Fermentation of some RS types favors butyrate production. Measurement of colonic fermentation in humans is difficult, and indirect measures (e.g., fecal samples) or animal models have been used. Of the latter, rodents appear to be of limited value, and pigs or dogs are preferable. RS is less effective than NSP in stool bulking, but epidemiological data suggest that it is more protective against colorectal cancer, possibly via butyrate. RS is a prebiotic, but knowledge of its other interactions with the microflora is limited. The contribution of RS to fermentation and colonic physiology seems to be greater than that of NSP. However, the lack of a generally accepted analytical procedure that accommodates the major influences on RS means this is yet to be established.

scholarly journals Obesity-Related Metabolome and Gut Microbiota Profiles of Juvenile Göttingen Minipigs—Long-Term Intake of Fructose and Resistant Starch

Metabolites ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 456
Author(s):  
Mihai V. Curtasu ◽  
Valeria Tafintseva ◽  
Zachary A. Bendiks ◽  
Maria L. Marco ◽  
Achim Kohler ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gut Microbiota ◽  
Resistant Starch ◽  
High Fat Diet ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
High Fat ◽  
Obesity And Diabetes ◽  
Ad Libitum ◽  
Chain Fatty Acids

The metabolome and gut microbiota were investigated in a juvenile Göttingen minipig model. This study aimed to explore the metabolic effects of two carbohydrate sources with different degrees of risk in obesity development when associated with a high fat intake. A high-risk (HR) high-fat diet containing 20% fructose was compared to a control lower-risk (LR) high-fat diet where a similar amount of carbohydrate was provided as a mix of digestible and resistant starch from high amylose maize. Both diets were fed ad libitum. Non-targeted metabolomics was used to explore plasma, urine, and feces samples over five months. Plasma and fecal short-chain fatty acids were targeted and quantified. Fecal microbiota was analyzed using genomic sequencing. Data analysis was performed using sparse multi-block partial least squares regression. The LR diet increased concentrations of fecal and plasma total short-chain fatty acids, primarily acetate, and there was a higher relative abundance of microbiota associated with acetate production such as Bacteroidetes and Ruminococcus. A higher proportion of Firmicutes was measured with the HR diet, together with a lower alpha diversity compared to the LR diet. Irrespective of diet, the ad libitum exposure to the high-energy diets was accompanied by well-known biomarkers associated with obesity and diabetes, particularly branched-chain amino acids, keto acids, and other catabolism metabolites.

Sign in / Sign up

Export Citation Format

Share Document