Effect of Rice Fiber on Human Fecal Microflora

Benno, Yoshimi; Endo, Kimiko; Miyoshi, Hideyuki; Okuda, Toyoko; Koishi, Hideo; Mitsuoka, Tomotari

doi:10.1111/j.1348-0421.1989.tb01992.x

Cited by 49 publications

(33 citation statements)

References 10 publications

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“…Conversely, Fuchs et al (12) noted a significant increase in the number of total anaerobes, and higher numbers of clostridia and streptococci when volunteers were given a high fiber diet, while the numbers of eubacteria and lactobacilli decreased. Benno et al (1) demonstrated that a high fiber intake causes changes in microbial populations; significantly higher numbers of Bifidobacterium adolescentis and Enterococcus faecalis and significantly lower numbers of bacteroides, eubacteria, and clostridia were observed. In the present study, the numbers of lecithinase-negative clostridia in the feces decreased significantly (P<0.01) during the HCP diet compared to LC or HC diets.…”

Section: Discussionmentioning

confidence: 99%

Effect of High Cholesterol Diet and Polydextrose Supplementation on the Microflora, Bacterial Enzyme Activity, Putrefactive Products, Volatile Fatty Acid (VFA) Profile, Weight, and pH of the Feces in Healthy Volunteers

Endo

Kumemura

Nakamura

et al. 1991

Bifidobacteria Microflora

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Effects of a high cholesterol (HC) diet and HC diet supplemented with polydextrose on fecal flora, fecal bacterial enzyme activity and fecal putrefactive products in eight healthy volunteers were studied. They were fed a low cholesterol (LC) diet, HC diet, HC diet supplemented with polydextrose (15 g/day) (HCP) at 2-week intervals consecutively for 6 weeks. Polydextrose supplementation increased fecal weight and decreased fecal pH and the stool concentration of indole, p-cresol, iso-valeric acid and iso-butyric acid. A significant reduction of Clostridium in the feces was also observed during the HCP diet period. The frequency of occurrence and number of Clostridium perfringens in the feces were lower for the HCP diet than for the HC diet. Epidemiologic and experimental studies indicate that geographic, urbanrural, and socioeconomic differences exist in the incidence of colon and rectal cancer (4,8,18) and that dietary factors, particularly a high fat intake and a relatively low intake of certain types of dietary fiber, play important roles in their etiology (2,26,31,32). Carcinogens or cocarcinogens are produced in the gut by bacterial action on dietary components or on secretions produced in response to the diet (14). Studies comparing feces of subjects from Scotland, England and the United States (high-risk area for large bowel cancer) to subjects from India, Japan, 53

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Section: Discussionmentioning

confidence: 99%

Effect of High Cholesterol Diet and Polydextrose Supplementation on the Microflora, Bacterial Enzyme Activity, Putrefactive Products, Volatile Fatty Acid (VFA) Profile, Weight, and pH of the Feces in Healthy Volunteers

Endo

Kumemura

Nakamura

et al. 1991

Bifidobacteria Microflora

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“…Abnormal nutritional conditions resulting from an oversupply of soluble carbohydrate can, however, lead to runaway production of lactate in the rumen, leading to the serious condition lactic acidosis (48). Although Megasphaera and Veillonella-related organisms have been reported from the human GI tract (5,19), molecular studies indicate that their populations may be quite variable between individuals (24,27,49). Meanwhile, recent reports suggest that significant amounts of lactate may be converted into butyrate in the human colonic system (7).…”

mentioning

confidence: 99%

Lactate-Utilizing Bacteria, Isolated from Human Feces, That Produce Butyrate as a Major Fermentation Product

Duncan¹,

Louis²,

Flint³

2004

Appl Environ Microbiol

934

793

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The microbial community of the human colon contains many bacteria that produce lactic acid, but lactate is normally detected only at low concentrations (<5 mM) in feces from healthy individuals. It is not clear, however, which bacteria are mainly responsible for lactate utilization in the human colon. Here, bacteria able to utilize lactate and produce butyrate were identified among isolates obtained from 10 ؊8 dilutions of fecal samples from five different subjects. Out of nine such strains identified, four were found to be related to Eubacterium hallii and two to Anaerostipes caccae, while the remaining three represent a new species within clostridial cluster XIVa based on their 16S rRNA sequences. Significant ability to utilize lactate was not detected in the butyrate-producing species Roseburia intestinalis, Eubacterium rectale, or Faecalibacterium prausnitzii. Whereas E. hallii and A. caccae strains used both D-and L-lactate, the remaining strains used only the D form. Addition of glucose to batch cultures prevented lactate utilization until the glucose became exhausted. However, when two E. hallii strains and one A. caccae strain were grown in separate cocultures with a starchutilizing Bifidobacterium adolescentis isolate, with starch as the carbohydrate energy source, the L-lactate produced by B. adolescentis became undetectable and butyrate was formed. Such cross-feeding may help to explain the reported butyrogenic effect of certain dietary substrates, including resistant starch. The abundance of E. hallii in particular in the colonic ecosystem suggests that these bacteria play important roles in preventing lactate accumulation.

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“…To date, the research demonstrates a decrease in Bifidobacterium and an increase in the total number of Enterobacteriaceae [44,45] (Tables 4 and 5).…”

Section: Changes In the Microflora With Agingmentioning

confidence: 95%

Probiotics and the Intestinal Microflora: What Impact on the Immune System, Infections and Aging?

M¹,

Marteau²,

Miller³

et al. 2006

CNF

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This review summarizes the results of the Danone International Probiotics Convention which examined the most recent science available on the impact of probiotics and intestinal microflora on human health. This is the second convention organized by Danone following that devoted to the 'Intelligent Intestine' which was held in Paris in June 2002 [1]. The 2003 Convention was devoted to recent scientific progress in the various field of the life sciences, enabling, not only enhanced elucidation of what happens in the body when we eat probiotics, examining properties of those microorganisms of particular value in terms of well-being and health.Probiotics are, in fact, first of all, foods that, when eaten regularly, have a role, specific to each strain, which is exercised in the host procuring beneficial assistance to various systems in addition to the conventional nutritional health benefits when consumed as a dairy product [2].It is indispensable to provide scientific proof of that activity by developing and publishing pertinent research papers, both scientific and clinical.The Nice Convention enabled the findings of numerous scientists working in the field to be pooled and shed new light on the future of probiotics.

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Effect of Rice Fiber on Human Fecal Microflora

Cited by 49 publications

References 10 publications

Effect of High Cholesterol Diet and Polydextrose Supplementation on the Microflora, Bacterial Enzyme Activity, Putrefactive Products, Volatile Fatty Acid (VFA) Profile, Weight, and pH of the Feces in Healthy Volunteers

Effect of High Cholesterol Diet and Polydextrose Supplementation on the Microflora, Bacterial Enzyme Activity, Putrefactive Products, Volatile Fatty Acid (VFA) Profile, Weight, and pH of the Feces in Healthy Volunteers

Lactate-Utilizing Bacteria, Isolated from Human Feces, That Produce Butyrate as a Major Fermentation Product

Probiotics and the Intestinal Microflora: What Impact on the Immune System, Infections and Aging?

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