Cereal Bran: Novel Processing Techniques, Nutritional Composition and Health Benefits

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Grain".

Deadline for manuscript submissions: 20 September 2025 | Viewed by 1473

Special Issue Editors


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Guest Editor
Department of Grain Engineering, College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
Interests: food science; cereal science; dietary fiber; protein and starch
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
Interests: cereal byproduct; dry fractionation; wheat aleurone; cell wall; arabinoxylan

Special Issue Information

Dear Colleagues,

Cereal bran, the primary byproduct of milling wheat, rice, corn, oats, and barley, is rich in dietary fiber, proteins, lipids, phenolics, minerals, and vitamins, making it a promising source for healthy food processing. This Special Issue will focus on innovative techniques such as grinding, dry fractionation, and fermentation that enhance the functional properties and health benefits of cereal bran and its components.

By examining current research and developments, we aim to highlight how these novel processing methods can improve the bioavailability of nutrients in cereal bran and the overall health benefits of their consumption. We invite contributions that investigate the relationship between new processing techniques and nutrient retention, the role of bran in promoting health benefits, and its potential in developing functional foods. Together, we will uncover the diverse advantages of cereal bran and its role in advancing dietary practices for improved health outcomes.

Potential topics include, but are not limited to, the following:

  • Cell wall polysaccharides in cereal bran;
  • Phytochemicals in cereal bran;
  • Novel processing techniques for improving cereal bran quality;
  • Health benefits of cereal bran and its components;
  • Health-promoting foods of cereal bran.

Prof. Dr. Sen Ma
Dr. Zhongwei Chen
Guest Editors

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Keywords

  • cereal bran
  • dietary fiber
  • lipids
  • enzymes
  • phytochemicals
  • novel processing techniques
  • health benefits
  • health-promoting foods

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Published Papers (3 papers)

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Research

18 pages, 5762 KiB  
Article
Physicochemical, Functional, and In Vitro Fermentation Characteristics of Buckwheat Bran Dietary Fiber Modified by Enzymatic Extrusion
by Tingting Bu, Yue Yu, Xiao Kong, Weicheng Wu, Zhiguo Zhang, Weiwei Hu, Komarova Natallia, Ming Cai, Kai Yang and Peilong Sun
Foods 2025, 14(8), 1300; https://doi.org/10.3390/foods14081300 - 9 Apr 2025
Viewed by 317
Abstract
The effects of cellulase–xylanase synergistic treatment combined with twin-screw extrusion on the physicochemical, functional, and in vitro fermentation characteristics of buckwheat bran dietary fiber (BBDF) were investigated. Compared to single enzymatic hydrolysis, the synergetic modification was more effective in promoting the soluble DF [...] Read more.
The effects of cellulase–xylanase synergistic treatment combined with twin-screw extrusion on the physicochemical, functional, and in vitro fermentation characteristics of buckwheat bran dietary fiber (BBDF) were investigated. Compared to single enzymatic hydrolysis, the synergetic modification was more effective in promoting the soluble DF (SDF) ratio (increased from 10.68% to 32.67%), functional properties, and prebiotic activities of BBDF and decreasing the insoluble DF (IDF) content. Under 0.6% (w/w) cellulase and xylanase with mild extrusion conditions (40–80 °C), the modified BBDF exhibited the highest capacities for glucose and cholesterol adsorption. FTIR and XRD experiments indicated that the enzymatic extrusion destroyed the intermolecular interactions of BBDF. Furthermore, enzymatically extruded BBDFs showed 2.2-fold higher short-chain fatty acid (SCFA) yields during in vitro fecal fermentation (total SCFAs: 87.8 mM vs. 40.0 mM in control), with butyrate production reaching 2.5 mM (+76.3%), among which the mildly extruded BBDFs exhibited superior prebiotic effects. Full article
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18 pages, 8384 KiB  
Article
Changes of Barley Bound Phenolics and Their Characteristics During Simulated Gastrointestinal Digestion and Colonic Fermentation In Vitro
by Yansheng Zhao, Fei Leng, Songtao Fan, Yiwei Ding, Tong Chen, Hongbin Zhou and Xiang Xiao
Foods 2025, 14(7), 1114; https://doi.org/10.3390/foods14071114 - 24 Mar 2025
Viewed by 351
Abstract
Phenolic compounds in cereals, known for their biological activities, are primarily found in a bound state within the bran. Their changes during digestion are linked to physiological activities. In this study, the dynamic changes and fermentation characteristics of barley bound phenolics (BBPs) were [...] Read more.
Phenolic compounds in cereals, known for their biological activities, are primarily found in a bound state within the bran. Their changes during digestion are linked to physiological activities. In this study, the dynamic changes and fermentation characteristics of barley bound phenolics (BBPs) were investigated through an in vitro rat gastrointestinal digestion and colonic fermentation. UPLC-HRMS revealed that the release rate of BBPs during colonic fermentation was significantly higher than that during gastric digestion (0.13%) and intestinal digestion (0.43%), reaching 5.02%. After 48 h of colonic fermentation, gallic acid and ferulic acid accounted for 35.05% and 27.84% of the total released phenolic acids, respectively. Confocal microscopy confirmed that BBPs were predominantly released in the colon. Additionally, BBPs significantly increased the content of acetate during colonic fermentation compared to the control samples, correlating with a decrease in pH value. 16S rRNA sequencing further revealed the modulatory effects of BBPs on colonic microbiota structure: BBPs significantly enhanced the Chao1 and Shannon indices of the microbiota. Notably, BBPs inhibited the growth of potentially harmful bacteria such as Proteobacteria and Enterobacteriaceae while promoting the proliferation of beneficial bacteria such as Akkermansia and Bifidobacteriaceae, thereby modulating the structure of the gut microbial community. These findings suggested that BBPs may promote gut health through prebiotic activity in the colon. Full article
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18 pages, 4787 KiB  
Article
Effects of Different Pretreatments on Wheat Bran and Its Arabinoxylan Obtained by Sequential Extraction with Dilute Alkali and Alkali–Urea Mixture
by Axiang Liu, Shengjie Zhang, Wentao Wang, Hanxue Hou, Yangyong Dai, Cheng Li and Hui Zhang
Foods 2025, 14(4), 696; https://doi.org/10.3390/foods14040696 - 18 Feb 2025
Viewed by 534
Abstract
Arabinoxylan (AX), an abundant and highly valuable component in wheat bran, has its structure and function influenced by the extraction method. A two-step extraction method, involving sequential extraction with a dilute alkali followed by a concentrated alkali–urea mixture, was employed to extract AX [...] Read more.
Arabinoxylan (AX), an abundant and highly valuable component in wheat bran, has its structure and function influenced by the extraction method. A two-step extraction method, involving sequential extraction with a dilute alkali followed by a concentrated alkali–urea mixture, was employed to extract AX from wheat bran. This approach aimed to obtain AX with a high phenolic acid content while achieving a relatively high extraction yield. The dilute alkali extraction could effectively retain the phenolic acid content in the AX extract (≤89 μg/g). However, its yield and sugar content were relatively low. In contrast, the alkali–urea extraction could achieve a relatively high yield (≤55%) and sugar content (≤75%). Different pretreatments (defatting, deproteinization, and delignification) were performed before extraction, causing significant changes to the chemical composition and cell wall structural characteristics of destarched wheat bran, which, in turn, affected the yield and composition of the AX extracts. Deproteinization effectively increased the sugar content, phenolic acid content, and overall yield of the extracts. Different pretreatment and extraction methods significantly affected the DPPH radical scavenging rate and Fe2+ chelating rate of the AX extracts but had little impact on the ABTS radical scavenging rate. The antioxidant activity of AX extracted using alkali–urea was unexpectedly higher than that extracted using a dilute alkali. This suggests that the antioxidant activity of AX does not entirely depend on its phenolic acid content but is influenced by various other factors. Full article
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