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Sruthi NU, Rao PS, Bennett SJ, Bhattarai RR. Formulation of a Synergistic Enzyme Cocktail for Controlled Degradation of Sorghum Grain Pericarp. Foods 2023; 12:foods12020306. [PMID: 36673398 PMCID: PMC9857962 DOI: 10.3390/foods12020306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Sorghum is one of the major grains produced worldwide for food and fodder, owing to its nutritional profile advantages. However, the utilisation of whole grain sorghum as an ingredient in conventional food formulations is limited due to its poor digestibility, which requires the removal of the outer fibrous layers. Grain breakage and loss of essential nutrients also disadvantage traditional milling practices. Using carbohydrate degrading enzymes to hydrolyse the grain pericarp is a novel approach to biopolishing, where selective degradation of the pericarp layers occurs without adversely affecting the nutrient profile. A collective synergism of enzymes has been proven to cause effective hydrolysis compared to individual enzymes due to the complex presence of non-starch polysaccharides in the grain's outer layers, which comprise a variety of sugars that show specific degradation with respect to each enzyme. The present study aimed to formulate such an enzyme cocktail with xylanase, cellulase, and pectinase in different proportions for hydrolysing sorghum grain pericarp by determining the yield of specific sugars in the pericarp extract after a certain period of incubation. The results showed that the xylanase enzyme has a major effect on the grain bran composition compared to cellulase and pectinase; however, a synergistic mixture yielded more hydrolysed sugars and anti-nutrients in the extract compared to each of the enzymes individually. The results were confirmed by morphological and crystallinity studies of the soaked grain. Compared to conventional water-soaked samples, grains soaked in a cocktail with 66.7% xylanase, 16.7% cellulase, and 16.7% pectinase had visibly thinner and more degraded fibre layers.
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Affiliation(s)
- N. U. Sruthi
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley 6102, Australia
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Pavuluri Srinivasa Rao
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sarita Jane Bennett
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley 6102, Australia
| | - Rewati Raman Bhattarai
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley 6102, Australia
- Correspondence:
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Tao R, Chen Q, Li Y, Guo L, Zhou Z. Physicochemical, nutritional, and phytochemical profile changes of fermented citrus puree from enzymatically hydrolyzed whole fruit under cold storage. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mencin M, Jamnik P, Mikulič Petkovšek M, Veberič R, Terpinc P. Enzymatic treatments of raw, germinated and fermented spelt (Triticum spelta L.) seeds improve the accessibility and antioxidant activity of their phenolics. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Torbica A, Radosavljević M, Belović M, Tamilselvan T, Prabhasankar P. Biotechnological tools for cereal and pseudocereal dietary fibre modification in the bakery products creation – Advantages, disadvantages and challenges. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Møller MS, Svensson B. Enzymes in grain processing. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2020.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Influence of enzymatic tempering on milling characteristics, flour quality, crystallinity and microstructure of wheat. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-020-00445-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Ruviaro AR, Barbosa PDPM, Macedo GA. Enzyme-assisted biotransformation increases hesperetin content in citrus juice by-products. Food Res Int 2019; 124:213-221. [DOI: 10.1016/j.foodres.2018.05.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/02/2018] [Accepted: 05/03/2018] [Indexed: 11/28/2022]
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Saleh ASM, Wang P, Wang N, Yang S, Xiao Z. Technologies for enhancement of bioactive components and potential health benefits of cereal and cereal-based foods: Research advances and application challenges. Crit Rev Food Sci Nutr 2018; 59:207-227. [PMID: 28846456 DOI: 10.1080/10408398.2017.1363711] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cereal grains are a major source of human food and their production has steadily been increased during the last several decades to meet the demand of our increasing world population. The modernized society and the expansion of the cereal food industry created a need for highly efficient processing technologies, especially flour production. Earlier scientific research efforts have led to the invention of the modern steel roller mill, and the refined flour of wheat has become a basic component in most of cereal-based foods such as breads and pastries because of the unique functionality of wheat protein. On the other hand, epidemiological studies have found that consumption of whole cereal grains was health beneficial. The health benefit of whole cereal grain is attributed to the combined effects of micronutrients, phytochemicals, and dietary fibre, which are mainly located in the outer bran layer and the germ. However, the removal of bran and germ from cereal grains during polishing and milling results in refined flour and food products with lower bioactive compounds and dietary fibre contents than those from whole grain. Also, the level of bioactive compounds in cereal food is influenced by other food preparation procedures such as baking, cooking, extrusion, and puffing. Therefore, food scientists and nutritionists are searching for strategies and processing technologies to enhance the content and bioavailability of nutrients, bioactive compounds, and dietary fibre of cereal foods. The objective of this article was to review the research advances on technologies for the enhancement of bioactive compounds and dietary fibre contents of cereal and cereal-based foods. Bioactivities or biological effects of enhanced cereal and cereal-based foods are presented. Challenges facing the application of the proposed technologies in the food industry are also discussed.
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Affiliation(s)
- Ahmed S M Saleh
- a College of Grain Science and Technology , Shenyang Normal University , Shenyang , Liaoning , China.,b Department of Food Science and Technology , Faculty of Agriculture, Assiut University , Assiut , Egypt
| | - Peng Wang
- a College of Grain Science and Technology , Shenyang Normal University , Shenyang , Liaoning , China.,c College of Food Science , Northeast Agricultural University , Harbin , Heilongjiang , China
| | - Na Wang
- a College of Grain Science and Technology , Shenyang Normal University , Shenyang , Liaoning , China.,d College of Food , Shenyang Agricultural University , Shenyang , Liaoning , China
| | - Shu Yang
- a College of Grain Science and Technology , Shenyang Normal University , Shenyang , Liaoning , China.,d College of Food , Shenyang Agricultural University , Shenyang , Liaoning , China
| | - Zhigang Xiao
- a College of Grain Science and Technology , Shenyang Normal University , Shenyang , Liaoning , China.,c College of Food Science , Northeast Agricultural University , Harbin , Heilongjiang , China
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