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Yu D, Zhu L, Gao M, Yin Z, Zhang Z, Zhu L, Zhan X. A Comparative Study of the Effects of Whole Cereals and Refined Cereals on Intestinal Microbiota. Foods 2023; 12:2847. [PMID: 37569116 PMCID: PMC10418403 DOI: 10.3390/foods12152847] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Cereals are one of the most important foods on which human beings rely to sustain basic life activities and are closely related to human health. This study investigated the effects of different steamed buns on intestinal microbiota. Three steamed buns were prepared using refined flour (RF), 1:1 mixed flour (MF), and whole wheat flour (WF). In vitro digestion simulations were conducted using a bionic gastrointestinal reactor (BGR) to examine their influence on intestinal microbiota. The results showed that at 0.5% addition, butyric acid and short-chain fatty acids in WF were significantly different from those in RF and MF (p < 0.05). WF also promoted the proliferation of beneficial microbiota, such as Megamonas and Subdoligranulum. At 0.5%, 1.0%, and 1.5% additions of WF, acetic acid and short-chain fatty acids at 1.5% WF increased by 1167.5% and 11.4% from 0.5% WF, respectively, and by 20.2% and 7.6% from 1.0% WF, respectively. WF also promoted the proliferation of Bifidobacterium, Lactobacillus, and Bacteroides and inhibited the growth of pathogenic microbiota, such as Streptococcus, Enterococcus, and Klebsiella. These findings support the consumption of whole cereals and offer insights into the development of new functional foods derived from wheat.
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Affiliation(s)
- Dan Yu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
| | - Li Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
- A & F Biotech. Ltd., Burnaby, BC V5A 3P6, Canada
| | - Minjie Gao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
| | - Zhongwei Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
| | - Zijian Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
| | - Ling Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
| | - Xiaobei Zhan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; (D.Y.); (L.Z.); (M.G.); (Z.Y.); (Z.Z.); (L.Z.)
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RamyaBai M, Wedick NM, Shanmugam S, Arumugam K, Nagarajan L, Vasudevan K, Gunasekaran G, Rajagopal G, Spiegelman D, Malik V, Anjana RM, Hu FB, Unnikrishnan R, Willett W, Malleshi N, Njelekela MA, Gimbi D, Krishnaswamy K, Henry C, Mohan V, Sudha V. Glycemic Index and Microstructure Evaluation of Four Cereal Grain Foods. J Food Sci 2019; 84:3373-3382. [PMID: 31762024 DOI: 10.1111/1750-3841.14945] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/01/2019] [Accepted: 10/14/2019] [Indexed: 01/21/2023]
Abstract
To determine the glycemic index (GI) of selected cereals and association with their microstructure. The GI of whole grain pilaf (WGP), instant brown rice (IBR), whole maize ugali (MWU), and refined maize ugali (RMU) was assessed in a randomized trial. Fourteen healthy participants with mean age of 25 years were administered 50 g portions of available carbohydrates from glucose and various test foods after an overnight fast on separate occasions. Capillary blood samples of participants were used to measure blood glucose over 2 hr. The GI was calculated as per standard protocol. The microstructure of test foods, determined by scanning electron microscopy was evaluated to understand the measured GI values. The GI (mean ± standard error) of IBR was the highest (87.8 ± 6.8) followed by RMU (74.7 ± 6.5) and WMU (71.4 ± 5.1). WGP had medium GI (58.9 ± 5.1; P < 0.01 vs. IBR). Microstructure examination of IBR revealed disruption of bran layer and presence of fissures indicating loss of intactness of bran. Stereozoom images for WGP revealed intact bran and germ. For RMU and WMU, the grain was milled leading to loss of integrity. IBR, RMU, and WMU have high GI values, which is likely due to disruption of bran layer, endosperm modification (IBR), and loss of grain matrix (WMU, RMU). WGP has medium GI probably due to fairly intact bran and germ. PRACTICAL APPLICATION: Wholegrain or whole meal flour may not necessarily be low in glycemic index (GI; low GI < 55; medium 55 to 69 and high GI ≥70). "Ugali" a commonly consumed cereal staple food in Tanzania made from either refined or whole meal maize flour was found to be a high GI food. Intact whole grain foods, such as whole grain pilaf (mixed intact whole grains) is a healthier alternative to milled whole grains such as whole meal maize flour. Instant quick cooking brown rice exhibited a high GI, due to the processing method, suggesting that regular brown rice may be a healthier option.
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Affiliation(s)
- Mookambika RamyaBai
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Nicole M Wedick
- Dept. of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Shobana Shanmugam
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Kokila Arumugam
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Lakshmipriya Nagarajan
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Kavitha Vasudevan
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Geetha Gunasekaran
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Gayathri Rajagopal
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Donna Spiegelman
- Dept. of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Dept. of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Vasanti Malik
- Dept. of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Ranjit Mohan Anjana
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Frank B Hu
- Dept. of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Dept. of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Ranjit Unnikrishnan
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Walter Willett
- Dept. of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Dept. of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Nagappa Malleshi
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Marina A Njelekela
- Dept. of Physiology, Muhimbili Univ. of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Dorothy Gimbi
- Dept. of Food Science and Nutrition, Sokoine Univ. of Agriculture, Morogoro, Tanzania
| | - Kamala Krishnaswamy
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Cjk Henry
- Clinical Nutritional Sciences, Singapore Inst. for Clinical Sciences, Brenner Centre for Molecular Medicine, Medical Drive, Singapore
| | - Viswanathan Mohan
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
| | - Vasudevan Sudha
- Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases, Gopalapuram, Chennai, India
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Yu L, Nanguet AL, Beta T. Comparison of Antioxidant Properties of Refined and Whole Wheat Flour and Bread. Antioxidants (Basel) 2013; 2:370-83. [PMID: 26784470 PMCID: PMC4665520 DOI: 10.3390/antiox2040370] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/13/2013] [Accepted: 11/14/2013] [Indexed: 11/25/2022] Open
Abstract
Antioxidant properties of refined and whole wheat flour and their resultant bread were investigated to document the effects of baking. Total phenolic content (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and oxygen radical absorbance capacity (ORAC) were employed to determine the content of ethanol extractable phenolic compounds. HPLC was used to detect the presence of phenolic acids prior to their confirmation using LC-MS/MS. Whole wheat flour showed significantly higher antioxidant activity than refined flour (p < 0.05). There was a significant effect of the bread-making process with the TPC of whole wheat bread (1.50–1.65 mg/g) and white bread (0.79–1.03 mg/g) showing a respective reduction of 28% and 33% of the levels found in whole wheat and refined flour. Similarly, baking decreased DPPH radical scavenging capacity by 32% and 30%. ORAC values, however, indicated that baking increased the antioxidant activities of whole wheat and refined flour by 1.8 and 2.9 times, respectively. HPLC analysis showed an increase of 18% to 35% in ferulic acid after baking to obtain whole and refined wheat bread containing 330.1 and 25.3 µg/g (average), respectively. Whole wheat flour and bread were superior to refined flour and bread in in vitro antioxidant properties.
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Affiliation(s)
- Lilei Yu
- Department of Food Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Anne-Laure Nanguet
- Department of Food Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Higher Engineering School in Agri-Food Integrated Development (ESIROI), Sainte-Clotilde, Reunion Island 97490, France.
| | - Trust Beta
- Department of Food Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Richardson Centre for Functional Foods & Nutraceuticals, Smartpark, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
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