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Xie Z, Dan M, Zhao G, Wang D. Recent advances in microbial high-value utilization of brewer's spent grain. BIORESOURCE TECHNOLOGY 2024; 408:131197. [PMID: 39097237 DOI: 10.1016/j.biortech.2024.131197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/26/2024] [Accepted: 07/31/2024] [Indexed: 08/05/2024]
Abstract
Mitigating the adverse impacts of agricultural and industrial by-products on human populations and the environment is essential. It is crucial to continually explore methods to upgrade and reengineer these by-products. Brewer's Spent Grain (BSG), the primary by-product of the beer brewing process, constitutes approximately 85% of these by-products. Its high moisture content and rich nutritional profile make BSG a promising candidate for microbial utilization. Consequently, valorizing high-yield, low-cost BSG through microbial fermentation adds significant value. This paper provides a comprehensive overview of two valorization pathways for BSG via microbial processing, tailored to the desired end products: utilizing fermented BSG as a nutritional supplement in human or animal diets, or cultivating edible fungi using BSG as a substrate. The review also explores the microbial fermentation of BSG to produce valuable metabolites, laying a theoretical foundation for its high-value utilization.
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Affiliation(s)
- Zhengjie Xie
- Yibin Academy of Southwest University, Yibin 644000, China; College of Food Science, Southwest University, Chongqing 400715, China
| | - Meiling Dan
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Guohua Zhao
- College of Food Science, Southwest University, Chongqing 400715, China
| | - Damao Wang
- Yibin Academy of Southwest University, Yibin 644000, China; College of Food Science, Southwest University, Chongqing 400715, China.
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Huang M, Bai J, Buccato DG, Zhang J, He Y, Zhu Y, Yang Z, Xiao X, Daglia M. Cereal-Derived Water-Unextractable Arabinoxylans: Structure Feature, Effects on Baking Products and Human Health. Foods 2024; 13:2369. [PMID: 39123560 PMCID: PMC11311280 DOI: 10.3390/foods13152369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/19/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
Arabinoxylans (AXs) are non-starch polysaccharides with complex structures naturally occurring in grains (i.e., barley, corn, and others), providing many health benefits, especially as prebiotics. AXs can be classified as water-extractable (WEAX) and water-unextractable (WUAX) based on their solubility, with properties influenced by grain sources and extraction methods. Numerous studies show that AXs exert an important health impact, including glucose and lipid metabolism regulation and immune system enhancement, which is induced by the interactions between AXs and the gut microbiota. Recent research underscores the dependence of AX physiological effects on structure, advocating for a deeper understanding of structure-activity relationships. While systematic studies on WEAX are prevalent, knowledge gaps persist regarding WUAX, despite its higher grain abundance. Thus, this review reports recent data on WUAX structural properties (chemical structure, branching, and MW) in cereals under different treatments. It discusses WUAX applications in baking and the benefits deriving from gut fermentation.
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Affiliation(s)
- Manchun Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Juan Bai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Daniele Giuseppe Buccato
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Naples, Italy;
| | - Jiayan Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Yufeng He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Ying Zhu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Zihan Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Xiang Xiao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (M.H.); (J.B.); (J.Z.); (Y.H.); (Y.Z.); (Z.Y.)
| | - Maria Daglia
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Naples, Italy;
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
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Ghajavand B, Avesani C, Stenvinkel P, Bruchfeld A. Unlocking the Potential of Brewers' Spent Grain: A Sustainable Model to Use Beer for Better Outcome in Chronic Kidney Disease. J Ren Nutr 2024:S1051-2276(24)00057-8. [PMID: 38621435 DOI: 10.1053/j.jrn.2024.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/26/2024] [Accepted: 03/29/2024] [Indexed: 04/17/2024] Open
Abstract
The rising global incidence of chronic inflammatory diseases calls for innovative and sustainable medical solutions. Brewers' spent grain (BSG), a byproduct of beer production, presents a unique opportunity in this regard. This review explores the multifaceted health benefits of BSG, with a focus on managing chronic kidney disease (CKD). BSG is identified as a potent prebiotic with potential as a therapeutic agent in CKD. We emphasize the role of gut dysbiosis in CKD and discuss how BSG could help mitigate metabolic derangements resulting from dysbiosis and CKD. Fermentation of BSG further enhances its positive impact on gut health. Incorporating fermented BSG as a key component in preventive health care could promote a more sustainable and healthier future. By optimizing the use of this typically discarded byproduct, we can align proactive health-care strategies with responsible resource management, benefiting both people and the environment.
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Affiliation(s)
- Babak Ghajavand
- Department of Renal Medicine, Linköping University Hospital, Linköping, Sweden.
| | - Carla Avesani
- Department of Renal Medicine, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Peter Stenvinkel
- Department of Renal Medicine, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Annette Bruchfeld
- Department of Renal Medicine, CLINTEC, Karolinska Institutet, Stockholm, Sweden; Division of Diagnostics and Specialist Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
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Wang F, Chen Y, Zheng J, Yang C, Li L, Li R, Shi M, Li Z. Preparation of potential organic fertilizer rich in γ-polyglutamic acid via microbial fermentation using brewer's spent grain as basic substrate. BIORESOURCE TECHNOLOGY 2024; 394:130216. [PMID: 38122994 DOI: 10.1016/j.biortech.2023.130216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Brewer's spent grain (BSG) is a main byproduct of the beer industry. BSG is rich in a variety of nutrients, and the search for its effective, high-value utilization is ongoing. Environmental probiotic factor γ-PGA was produced by fermenting Bacillus subtilis with BSG substrate and the fermenting grain components were analyzed. The γ-PGA yield reached 31.58 ± 0.21 g/kg of BSG. Gas chromatography-mass spectrometry and non-targeted metabolomics analyses revealed 73 new volatile substances in the fermenting grains. Furthermore, 2,376 metabolites were upregulated after fermentation and several components were beneficial for plant growth and development (such as ectoine, acetyl eugenol, L-phenylalanine, niacin, isoprene, pantothenic acid, dopamine, glycine, proline, jasmonic acid, etc). These results show that it is possible to synthesize adequate amounts of γ-PGA for use as a functional fertilizer.
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Affiliation(s)
- Fengqing Wang
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China
| | - Yanmei Chen
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China
| | - Jia Zheng
- Wuliangye Yibin Co., Ltd., Yibin, Sichuan 644000, China
| | - Can Yang
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China
| | - Li Li
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China
| | - Rong Li
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China
| | - Meilin Shi
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China
| | - Zhongxuan Li
- College of Biotechnology, Sichuan University of Science and Engineering, Yibin 644000, China.
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Saxena A, Hussain A, Parveen F, Ashfaque M. Current status of metabolic engineering of microorganisms for bioethanol production by effective utilization of pentose sugars of lignocellulosic biomass. Microbiol Res 2023; 276:127478. [PMID: 37625339 DOI: 10.1016/j.micres.2023.127478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/01/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023]
Abstract
Lignocellulosic biomass, consisting of homo- and heteropolymeric sugars, acts as a substrate for the generation of valuable biochemicals and biomaterials. The readily available hexoses are easily utilized by microbes due to the presence of transporters and native metabolic pathways. But, utilization of pentose sugar viz., xylose and arabinose are still challenging due to several reasons including (i) the absence of the particular native pathways and transporters, (ii) the presence of inhibitors, and (iii) lower uptake of pentose sugars. These challenges can be overcome by manipulating metabolic pathways/glycosidic enzymes cascade by using genetic engineering tools involving inverse-metabolic engineering, ex-vivo isomerization, Adaptive Laboratory Evolution, Directed Metabolic Engineering, etc. Metabolic engineering of bacteria and fungi for the utilization of pentose sugars for bioethanol production is the focus area of research in the current decade. This review outlines current approaches to biofuel development and strategies involved in the metabolic engineering of different microbes that can uptake pentose for bioethanol production.
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Affiliation(s)
- Ayush Saxena
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
| | - Akhtar Hussain
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
| | - Fouziya Parveen
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
| | - Mohammad Ashfaque
- Lignocellulose & Biofuel Laboratory, Department of Biosciences, Integral University, Lucknow 226026, Uttar Pradesh, India.
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Orozco-Angelino X, Espinosa-Ramírez J, Serna-Saldívar SO. Extrusion as a tool to enhance the nutritional and bioactive potential of cereal and legume by-products. Food Res Int 2023; 169:112889. [PMID: 37254337 DOI: 10.1016/j.foodres.2023.112889] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/03/2023] [Accepted: 04/24/2023] [Indexed: 06/01/2023]
Abstract
Cereal and legume by-products obtained from primary food production industries pose an environmental and economic problem. Nevertheless, these residues can potentially yield value-added products due to their elevated content of dietary fiber, phytochemicals, vitamins, minerals, and residual levels of proteins, which makes them a suitable and heightened option for reutilization in human consumption. Several studies identify extrusion as an innovative technology to modify the technofunctionality and nutritional properties of cereal and legume by-products, resulting in the production of improved ingredients. This review focuses on studies that evaluate the effect of extrusion to improve the nutritional and bioactive potential of cereal and legume by-products. A revision of the extrusion process parameters that improve the profile and bioavailability of dietary fiber, proteins, and phenolic compounds, and minimize antinutritional factors associated to cereal and legume by-products was done. The composition of by-products and process parameters such as feed moisture, barrel temperature and screw speed influence the resulting effect of extrusion. Studies suggest that extruding composite feedstock containing cereal or legume by-products may limit the molecular modifications that trigger the nutritional improvements. Therefore, extrusion applied as a pretreatment represents an interesting and economic alternative to improve the profile and bioavailability of the nutrients found in cereal and legume by-products which might lead to the development of functional ingredients useful to produce foods aimed to prevent chronic diseases.
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Affiliation(s)
- Xiadani Orozco-Angelino
- Tecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, 64849 Monterrey, NL, Mexico
| | - Johanan Espinosa-Ramírez
- Tecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, 64849 Monterrey, NL, Mexico.
| | - Sergio O Serna-Saldívar
- Tecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, 64849 Monterrey, NL, Mexico
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Kobelev KV, Gribkova IN, Kharlamova LN, Danilyan AV, Zakharov MA, Lazareva IV, Kozlov VI, Borisenko OA. Study of Brewer's Spent Grain Environmentally Friendly Processing Ways. Molecules 2023; 28:molecules28114553. [PMID: 37299027 DOI: 10.3390/molecules28114553] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/26/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023] Open
Abstract
BACKGROUND This article is devoted to the study of the effect of electrochemically activated water (catholyte with pH 9.3) on organic compounds of the plant matrix of brewer's spent grain in order to extract various compounds from it. METHODS Brewer's spent grain was obtained from barley malt at a pilot plant by mashing the malt followed by filtration and washing of the grain in water and storing it at (0 ± 2) °C in craft bags. For the organic compound quantitative determination, instrumental methods of analysis (HPLC) were used, and the results were subjected to mathematical analysis. RESULTS The study results showed that at atmospheric pressure, the alkaline properties of the catholyte showed better results compared to aqueous extraction with respect to β-glucan, sugars, nitrogenous and phenolic compounds, and 120 min was the best period for extraction at 50 °C. The excess pressure conditions used (0.5 ÷ 1 atm) revealed an increase in the accumulation of non-starch polysaccharide and nitrogenous compounds, while the level of sugars, furan and phenolic compounds decreased with increasing treatment duration. The waste grain extract ultrasonic treatment used revealed the effectiveness of catholyte in relation to the extraction of β-glucan and nitrogenous fractions; however, sugars and phenolic compounds did not significantly accumulate. The correlation method made it possible to reveal the regularities in the formation of furan compounds under the conditions of extraction with the catholyte: Syringic acid had the greatest effect on the formation of 5-OH-methylfurfural at atmospheric pressure and 50 °C and vanillic acid under conditions of excess pressure. Regarding furfural and 5-methylfurfural, amino acids had a direct effect at excess pressure. It was shown that the content of all furan compounds depends on amino acids with thiol groups and gallic acid; the formation of 5-hydroxymethylfurfural and 5-methylfurfural is influenced by gallic and vanillic acids; the release of furfural and 5-methylfurfural is determined by amino acids and gallic acid; excess pressure conditions promote the formation of furan compounds under the action of gallic and lilac acids. CONCLUSIONS This study showed that a catholyte allows for efficient extraction of carbohydrate, nitrogenous and monophenolic compounds under pressure conditions, while flavonoids require a reduction in extraction time under pressure conditions.
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Affiliation(s)
- Konstantin V Kobelev
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Irina N Gribkova
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Larisa N Kharlamova
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Armen V Danilyan
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Maxim A Zakharov
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Irina V Lazareva
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Valery I Kozlov
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
| | - Olga A Borisenko
- All-Russian Scientific Research Institute of Brewing, Beverage and Wine Industry-Branch of V.M. Gorbatov Federal Research Center for Food Systems, 119021 Moscow, Russia
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