Dietary Protein and Gut Microbiota Composition and Function

Zhao, Jingyuan; Zhang, Xiaoya; Liu, Hongbin; Brown, Michael A.; Qiao, Shiyan

doi:10.2174/1389203719666180514145437

Cited by 223 publications

(191 citation statements)

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“…To understand whether and how food affects the microbial communities that colonize the digestive tract of BSF larvae, we have examined dietary substrates that strongly differ in terms of nutrient composition. In particular, each of the three diets was characterized by a different protein/carbohydrate ratio, a parameter that has been demonstrated to impact on the gut microbiota (38)(39)(40) and insect performances (41)(42)(43). Indeed, we have detected differences in BSF larval development on the different diets.…”

Section: Discussionmentioning

confidence: 90%

The Intestinal Microbiota of Hermetia illucens Larvae Is Affected by Diet and Shows a Diverse Composition in the Different Midgut Regions

Bruno

Bonelli

Filippis

et al. 2019

Appl Environ Microbiol

157

212

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The larva of the black soldier fly (Hermetia illucens) has emerged as an efficient system for the bioconversion of organic waste. Although many research efforts are devoted to the optimization of rearing conditions to increase the yield of the bioconversion process, microbiological aspects related to this insect are still neglected. Here, we describe the microbiota of the midgut of H. illucens larvae, showing the effect of different diets and midgut regions in shaping microbial load and diversity. The bacterial communities residing in the three parts of the midgut, characterized by remarkable changes in luminal pH values, differed in terms of bacterial numbers and microbiota composition. The microbiota of the anterior part of the midgut showed the highest diversity, which gradually decreased along the midgut, whereas bacterial load had an opposite trend, being maximal in the posterior region. The results also showed that the influence of the microbial content of ingested food was limited to the anterior part of the midgut, and that the feeding activity of H. illucens larvae did not significantly affect the microbiota of the substrate. Moreover, a high protein content compared to other macronutrients in the feeding substrate seemed to favor midgut dysbiosis. The overall data indicate the importance of taking into account the presence of different midgut structural and functional domains, as well as the substrate microbiota, in any further study that aims at clarifying microbiological aspects concerning H. illucens larval midgut. IMPORTANCE The demand for food of animal origin is expected to increase by 2050. Since traditional protein sources for monogastric diets are failing to meet the increasing demand for additional feed production, there is an urgent need to find alternative protein sources. The larvae of Hermetia illucens emerge as efficient converters of low-quality biomass into nutritionally valuable proteins. Many studies have been performed to optimize H. illucens mass rearing on a number of organic substrates and to quantitatively and qualitatively maximize the biomass yield. On the contrary, although the insect microbiota can be fundamental for bioconversion processes and its characterization is mandatory also for safety aspects, this topic is largely overlooked. Here, we provide an in-depth study of the microbiota of H. illucens larval midgut, taking into account pivotal aspects, such as the midgut spatial and functional regionalization, as well as microbiota and nutrient composition of the feeding substrate.

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Section: Discussionmentioning

confidence: 90%

The Intestinal Microbiota of Hermetia illucens Larvae Is Affected by Diet and Shows a Diverse Composition in the Different Midgut Regions

Bruno

Bonelli

Filippis

et al. 2019

Appl Environ Microbiol

157

212

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“…Additionally, Amines in the nitrosation reaction can form carcinogens such nitrosamines. Phenol and indole compounds negatively affect intestinal epithelium as they stimulate development of cancer by increasing the strength of carcinogenic factors [43,44]. In contrast to glycosides in food that do not seem to cause any harm in the host organism, flavonoid aglycones present mutagenic and toxic effects.…”

Section: The Influence Of Polyphenol Compounds Contained In Tea On Inmentioning

confidence: 99%

The Influence of Polyphenol Compounds on Human Gastrointestinal Tract Microbiota

et al. 2020

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Polyphenols form a diverse group of compounds containing at least two hydroxyl groups in their chemical structure. Because of the common presence in plant kingdom, polyphenols are considered a significant component of food and an important group of compounds with antioxidant properties. The absorption of polyphenols present in food depends mostly on the activity of intestinal microflora. However, little is known about the processes and interactions responsible for such phenomenon in guts ecosystem. There are only few available publications that examine the effect on polyphenols on intestinal microbiota. Therefore, this work will focus on describing the relationship between polyphenol compounds present in food and bacteria colonizing the intestines, their mechanism, and impact on human’s health.

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“…Piglets. It is well known that both exogenous and endogenous source proteins can be used by the gastrointestinal microbiota as a fermentable substrate [38,39] and can be used for the production of diet proteins through degradation, including branched-chain fatty acids (BCFAs), ammonia, amines, phenols, and indoles [35,39]. Bacteria, such as Bacteroides spp., Propionibacterium spp., Streptococcus, and Clostridium species, are associated with the formation of the substances listed above [20].…”

Section: E Effect Of Dietary Protein On the Gut Health Of Weanedmentioning

confidence: 99%

What Is the Impact of Diet on Nutritional Diarrhea Associated with Gut Microbiota in Weaning Piglets: A System Review

Gao

Yin

et al. 2019

BioMed Research International

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Piglets experience severe growth challenges and diarrhea after weaning due to nutritional, social, psychological, environmental, and physiological changes. Among these changes, the nutritional factor plays a key role in postweaning health. Dietary protein, fibre, starch, and electrolyte levels are highly associated with postweaning nutrition diarrhea (PWND). In this review, we mainly discuss the high protein, fibre, resistant starch, and electrolyte imbalance in diets that induce PWND, with a focus on potential mechanisms in weaned piglets.

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Dietary Protein and Gut Microbiota Composition and Function

Cited by 223 publications

References 0 publications

The Intestinal Microbiota of Hermetia illucens Larvae Is Affected by Diet and Shows a Diverse Composition in the Different Midgut Regions

The Intestinal Microbiota of Hermetia illucens Larvae Is Affected by Diet and Shows a Diverse Composition in the Different Midgut Regions

The Influence of Polyphenol Compounds on Human Gastrointestinal Tract Microbiota

What Is the Impact of Diet on Nutritional Diarrhea Associated with Gut Microbiota in Weaning Piglets: A System Review

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