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Zhu P, Niu D, Zhang S, Li C, Yin D, Zhi J, Zhang L, Jiang X, Ren J. Enhanced delignification and production of bioactive compounds in wheat straw by optimizing sterilization methods for Irpex lacteus fermentation. Food Chem 2024; 435:137570. [PMID: 37774616 DOI: 10.1016/j.foodchem.2023.137570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 09/04/2023] [Accepted: 09/21/2023] [Indexed: 10/01/2023]
Abstract
This study aimed to examine the effects of sterilization methods on the degradation ability and bioactive compound production of Irpex lacteus in wheat straw. Following 28 days of fermentation, the lignin content of samples autoclaved and pasteurized at pH 4.5 was reduced by 16.0 % - 21.7 % compared to pasteurized samples without pH adjustment, accompanied by a significant increase in sugar yield ranging from 83.30 % - 96.35 %. Autoclaved samples exhibited the lowest total phenol content and antioxidant activity (P < 0.05). Bacillus occupied an absolute advantage (89.1 %) in samples pasteurized at pH 4.5, whereas 10 bacterial genera exhibited abundances above 1 % in pasteurized samples without pH adjustment. Furthermore, 45.1 % - 47.2 % of the metabolites comprised lipids and lipid-like molecules, and some of them were improved by pasteurization at pH 4.5. Overall, pasteurization at acidic conditions is an effective sterilization method for the fungal conversion of wheat straw.
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Affiliation(s)
- Peng Zhu
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Dongze Niu
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Sainan Zhang
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Chunyu Li
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Dongmin Yin
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Junqiang Zhi
- Beijing General Station of Animal Husbandry, No. 21 Chaoqian Road, Changping District, Beijing, 100101, China.
| | - Lili Zhang
- Beijing General Station of Animal Husbandry, No. 21 Chaoqian Road, Changping District, Beijing, 100101, China.
| | - Xingmei Jiang
- Bijie Institute of Animal Husbandry and Veterinary Science, Degoumajiayuan Road, Qixingguan District, Bijie, 551700, China.
| | - Jianjun Ren
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China; National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
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Martín C, Zervakis GI, Xiong S, Koutrotsios G, Strætkvern KO. Spent substrate from mushroom cultivation: exploitation potential toward various applications and value-added products. Bioengineered 2023; 14:2252138. [PMID: 37670430 PMCID: PMC10484051 DOI: 10.1080/21655979.2023.2252138] [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: 09/20/2022] [Revised: 07/28/2023] [Accepted: 08/14/2023] [Indexed: 09/07/2023] Open
Abstract
Spent mushroom substrate (SMS) is the residual biomass generated after harvesting the fruitbodies of edible/medicinal fungi. Disposal of SMS, the main by-product of the mushroom cultivation process, often leads to serious environmental problems and is financially demanding. Efficient recycling and valorization of SMS are crucial for the sustainable development of the mushroom industry in the frame of the circular economy principles. The physical properties and chemical composition of SMS are a solid fundament for developing several applications, and recent literature shows an increasing research interest in exploiting that inherent potential. This review provides a thorough outlook on SMS exploitation possibilities and discusses critically recent findings related to specific applications in plant and mushroom cultivation, animal husbandry, and recovery of enzymes and bioactive compounds.
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Affiliation(s)
- Carlos Martín
- Department of Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
- Department of Chemistry, Umeå University, Umeå, Sweden
| | | | - Shaojun Xiong
- Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | | | - Knut Olav Strætkvern
- Department of Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
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3
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Klausen SJ, Falck-Ytter AB, Strætkvern KO, Martin C. Evaluation of the Extraction of Bioactive Compounds and the Saccharification of Cellulose as a Route for the Valorization of Spent Mushroom Substrate. Molecules 2023; 28:5140. [PMID: 37446802 DOI: 10.3390/molecules28135140] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/23/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
The extraction of bioactive compounds and cellulose saccharification are potential directions for the valorization of spent mushroom substrate (SMS). Therefore, investigating the suitability of different extraction methods for recovering bioactive compounds from SMS and how the extraction affects the enzymatic saccharification is of uppermost relevance. In this work, bioactive compounds were extracted from Pleurotus spp. SMS using four extraction methods. For Soxhlet extraction (SoE), a 40:60 ethanol/water mixture gave the highest extraction efficiency (EE) (69.9-71.1%) among the seven solvent systems assayed. Reflux extraction with 40:60 ethanol/water increased the extraction yield and EE compared to SoE. A shorter reflux time yielded a higher extraction of carbohydrates than SoE, while a longer time was more effective for extracting phenolics. The extracts from 240 min of reflux had comparable antioxidant activity (0.3-0.5 mM GAE) with that achieved for SoE. Ultrasound-assisted extraction (UAE) at 65 °C for 60 min allowed an EE (~82%) higher than that achieved by either reflux for up to 150 min or SoE. Subcritical water extraction (SWE) at 150 °C resulted in the best extraction parameters among all the tested methods. Vanillic acid and chlorogenic acid were the primary phenolic acids identified in the extracts. A good correlation between the concentration of caffeic acid and the antioxidant activity of the extracts was found. Saccharification tests revealed an enhancement of the enzymatic digestibility of SMS cellulose after the extraction of bioactive compounds. The findings of this initial study provide indications on new research directions for maximizing the recovery of bioactive compounds and fermentable sugars from SMS.
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Affiliation(s)
- Sarah J Klausen
- Department of Biotechnology, Inland Norway University of Applied Sciences, N-2317 Hamar, Norway
| | | | - Knut Olav Strætkvern
- Department of Biotechnology, Inland Norway University of Applied Sciences, N-2317 Hamar, Norway
| | - Carlos Martin
- Department of Biotechnology, Inland Norway University of Applied Sciences, N-2317 Hamar, Norway
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
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Zied DC, da Silva Freitas MA, de Almeida Moreira BR, da Silva Alves L, Pardo-Giménez A. A Comparative Analysis of Biodegradation and Bioconversion of Lentinula edodes and Other Exotic Mushrooms. Microorganisms 2023; 11:microorganisms11040897. [PMID: 37110320 PMCID: PMC10142386 DOI: 10.3390/microorganisms11040897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 04/03/2023] Open
Abstract
Mushrooms are capable of bioconverting organic residues into food. Understanding the relationship between high-quality yields and substrate biomass from these residues is critical for mushroom farms when choosing new strains. The objective of this exploratory study was, therefore, to analyze whether exotic mushrooms, namely, Pleurotus eryngii, Flammulina velutipes, and Agrocybe aegerita, could biologically convert the substrate into edible mushrooms as effectively as Lentinula edodes (baseline). Five experiments were carried out. Biological efficiency, biodegradability coefficient, mass balance and chemical characterization of the substrate were evaluated. Strategically hydrating the sawdust enabled L. edodes to achieve the greatest biodegradability and biological efficiency of 0.5 and 94.2 kg dt−1, respectively. The values for L. edodes on wheat straw without hydration were 0.2 and 68.8 kg dt−1, respectively. From 1000 kg of fresh substrate, P. eryngii produced 150.1 kg of edible mushrooms, making it technically competitive with L. edodes on wheat straw (195.9 kg). Hence, P. eryngii was the most reliable option for scaling among the exotic mushrooms. The analytical insights from our study provide further knowledge to advance the field’s prominence in high-throughput mushroom-producing systems, particularly for exotic mushrooms.
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Grimm A, Chen F, Simões dos Reis G, Dinh VM, Khokarale SG, Finell M, Mikkola JP, Hultberg M, Dotto GL, Xiong S. Cellulose Fiber Rejects as Raw Material for Integrated Production of Pleurotus spp. Mushrooms and Activated Biochar for Removal of Emerging Pollutants from Aqueous Media. ACS OMEGA 2023; 8:5361-5376. [PMID: 36816655 PMCID: PMC9933083 DOI: 10.1021/acsomega.2c06453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Cellulose fiber rejects from industrial-scale recycling of waste papers were dried and de-ashed using a combined cyclone-drying and sieving process. The upgraded fiber reject was used as a component of substrates for the cultivation of Pleurotus ostreatus and Pleurotus eryngii mushrooms. Acetic acid (AA) and acid whey (AW) were used to adjust the pH of fiber reject-based substrates. Spent substrate (SMS) was used for the production of activated biochar using H3PO4 and KOH as activating agents and pyrolysis temperatures of 500, 600, and 700 °C. The effectiveness of the biochars in removing pollutants from water was determined using acetaminophen and amoxicillin. By using a feeding rate of 250 kg/h and a drying air temperature of 70 °C, the moisture content of the raw fiber rejects (57.8 wt %) was reduced to 5.4 wt %, and the ash content (39.2 wt %) was reduced to 21.5 wt %. Substrates with 60 and 80 wt % de-ashed cellulose fiber were colonized faster than a birch wood-based control substrate. The adjustment of the pH of these two substrates to approximately 6.5 by using AA led to longer colonization times but biological efficiencies (BEs) that were higher or comparable to that of the control substrate. The contents of ash, crude fiber, crude fat, and crude protein of fruit bodies grown on fiber reject-based substrates were comparable to that of those grown on control substrates, and the contents of toxic heavy metals, that is, As, Pb, Cd, and Hg, were well below the up-limit values for food products set in EC regulations. Activated biochar produced from fiber reject-based SMS at a temperature of 700 °C resulted in a surface area (BET) of 396 m2/g (H3PO4-activated biochar) and 199 m2/g (KOH-activated biochar). For both activated biochars, the kinetics of adsorption of acetaminophen and amoxicillin were better described using the general order model. The isotherms of adsorption were better described by the Freundlich model (H3PO4-activated biochar) and the Langmuir model (KOH-activated biochar).
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Affiliation(s)
- Alejandro Grimm
- Department
of Forest Biomaterials and Technology, Swedish
University of Agricultural Sciences, UmeåSE-901 83, Sweden
| | - Feng Chen
- Department
of Forest Biomaterials and Technology, Swedish
University of Agricultural Sciences, UmeåSE-901 83, Sweden
| | - Glaydson Simões dos Reis
- Department
of Forest Biomaterials and Technology, Swedish
University of Agricultural Sciences, UmeåSE-901 83, Sweden
| | - Van Minh Dinh
- Technical
Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, UmeåSE-901 87, Sweden
| | - Santosh Govind Khokarale
- Technical
Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, UmeåSE-901 87, Sweden
| | - Michael Finell
- Department
of Forest Biomaterials and Technology, Swedish
University of Agricultural Sciences, UmeåSE-901 83, Sweden
| | - Jyri-Pekka Mikkola
- Technical
Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, UmeåSE-901 87, Sweden
- Industrial
Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry
Centre, Åbo Akademi University, Åbo-TurkuFI-20500, Finland
| | - Malin Hultberg
- Department
of Biosystems and Technology, Swedish University
of Agricultural Sciences, AlnarpSE-230 53, Sweden
| | - Guilherme L. Dotto
- Research
Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, RS,
Santa MariaBR 97105-900, Brazil
| | - Shaojun Xiong
- Department
of Forest Biomaterials and Technology, Swedish
University of Agricultural Sciences, UmeåSE-901 83, Sweden
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Zhang Z, Wu D, Li W, Chen W, Liu Y, Zhang J, Wan J, Yu H, Zhou S, Yang Y. Structural elucidation and anti-inflammatory activity of a proteoglycan from spent substrate of Lentinula edodes. Int J Biol Macromol 2023; 224:1509-1523. [PMID: 36550792 DOI: 10.1016/j.ijbiomac.2022.10.239] [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: 08/03/2022] [Revised: 09/28/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
Abstract
A proteoglycan LEPS1 was firstly isolated and purified from the spent substrate of Lentinula edodes, an agricultural waste that may cause environmental pollution. The average molecular weight of LEPS1 was 1.18 × 104 g/mol, and carbohydrate moiety (88.9 %) was composed of glucose, arabinose, galactose, xylose and mannose at a molar ratio of 1.2:1.2:1.0:2.3:1.1. The protein moiety (8.5 %) of LEPS1 was bonded to the polysaccharide chain via O-glycosidic linkage. LEPS1 could significantly improve the inflammatory injury of LPS stimulated RAW264.7 macrophages by inhibiting the secretion of NO and decreasing the levels of pro-inflammatory factors (TNF-α, IL-1β and IL-6). LEPS1 inhibited JAK-STAT1 and p38 MAPK signaling pathway via modulating JAK expression, phosphorylation of STAT1 and phosphorylation of p38, respectively. Moreover, LEPS1 could promote the expression of CD 206 and IL-10 which were the markers for repairing macrophages. Overall, LEPS1 had anti-inflammatory activity and can potentially treat as a novel anti-inflammation agent. This work could provide scientific basis and valuable information for the highly efficient utilization of spent L. edodes substrates as the by-product in mushroom industries.
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Affiliation(s)
- Zhong Zhang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Di Wu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Wen Li
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Wanchao Chen
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Yanfang Liu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Jingsong Zhang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Jianing Wan
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Hailong Yu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Shuai Zhou
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China
| | - Yan Yang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, China, National Engineering Research Center of Edible Fungi, Shanghai 201403, China.
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Leong YK, Varjani S, Lee DJ, Chang JS. Valorization of spent mushroom substrate for low-carbon biofuel production: Recent advances and developments. BIORESOURCE TECHNOLOGY 2022; 363:128012. [PMID: 36155811 DOI: 10.1016/j.biortech.2022.128012] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Due to the nutritional values and functional bioactivities of mushrooms, the global market value of the edible mushroom industry has been growing steadily. However, the production of 1 kg of fresh mushroom generates about 5 kg of wet byproducts (known as spent mushroom substrate; SMS). This necessitates proper waste management to mitigate potential environmental threats. Embracing the "waste-to-fuel" concept, SMS as lignocellulosic waste can serve as cheap and abundant feedstock for the production of a variety of biofuels, including biogas, biohydrogen, bioethanol, bio-oil, and solid-biofuels. Mushroom cultivation serves as efficient biological pretreatment for biofuel production, promoting biofuel yield and improving the overall economy. Therefore, integrated mushroom cultivation and biofuel production can simultaneously satisfy the rapidly rising food and energy demand. The article systematically reviewed the recycling and re-utilization of SMS in sustainable biofuel production, discussing the possible challenges and proposing future directions for the green development of the mushroom industry.
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Affiliation(s)
- Yoong Kit Leong
- Department of Chemical and Materials Engineering, Tunghai University, Taichung, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, Taiwan
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar - 382 010, Gujarat, India
| | - Duu-Jong Lee
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tang, Hong Kong
| | - Jo-Shu Chang
- Department of Chemical and Materials Engineering, Tunghai University, Taichung, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li 32003, Taiwan.
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A Comparative Photographic Review on Higher Plants and Macro-Fungi: A Soil Restoration for Sustainable Production of Food and Energy. SUSTAINABILITY 2022. [DOI: 10.3390/su14127104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The Kingdom of Plantae is considered the main source of human food, and includes several edible and medicinal plants, whereas mushrooms belong to the Kingdom of fungi. There are a lot of similar characteristics between mushrooms and higher plants, but there are also many differences among them, especially from the human health point of view. The absences of both chlorophyll content and the ability to form their own food are the main differences between mushrooms and higher plants. The main similar attributes found in both mushrooms and higher plants are represented in their nutritional and medicinal activities. The findings of this review have a number of practical implications. A lot of applications in different fields could be found also for both mushrooms and higher plants, especially in the bioenergy, biorefinery, soil restoration, and pharmaceutical fields, but this study is the first report on a comparative photographic review between them. An implication of the most important findings in this review is that both mushrooms and plants should be taken into account when integrated food and energy are needed. These findings will be of broad use to the scientific and biomedical communities. Further investigation and experimentation into the integration and production of food crops and mushrooms are strongly recommended under different environmental conditions, particularly climate change.
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Li C, Xu S. Edible mushroom industry in China: current state and perspectives. Appl Microbiol Biotechnol 2022; 106:3949-3955. [PMID: 35622125 DOI: 10.1007/s00253-022-11985-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 12/31/2022]
Abstract
China is one of the largest producers and exporters of wild edible fungi in the world. Cultivation mushroom production value ranks within the top five after grain, vegetable, fruit, and edible oil plantation, greater than sugar, cotton, and tobacco business. More than 40 new varieties of high market value mushrooms from our group were highlighted in this article. Mushroom cultivations have a high impact on China's poverty alleviation program, with earnings at least ten times higher than rice and corn. The products were exported to 137 countries and regions, mainly to Japan, South Korea, ASEAN, the USA, and the European Union, among these, Japan is the biggest import market for cultivated mushrooms from China. Rapid development in the market and an increased demand for edible fungi generally enhance the economy of domestic edible fungi. We are the leading research group in logical farm design that is HACCP-certified to reduce the cost of investment for agriculture, thus broadening the consumption market of edible mushrooms and forming a demand-oriented leading industry for the promotion of human health. The enterprise needs to re-examine the operation plan and the strategic thinking to improve the fundamental drivers based on the available resources of the locality. Mushrooms growing intergrate with upgraded technologies and equipment to become smart agriculture which have smart production and intelligent factories. The purpose of suitable products will not change: delicious, nutritious, healthy, and modern. KEY POINTS: • Cultivation mushroom production value ranks within the top five after grain, vegetable, fruit, and edible oil plantation, greater than sugar, cotton, and tobacco business. • Mushroom cultivations have a high impact on China's poverty alleviation program, with earnings at least ten times higher than rice and corn. • The development of transportation and industrialization of mushrooms facilitate the modernization of mushroom industry in China.
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Affiliation(s)
- Changtian Li
- Engineering Research Center for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China.
| | - Shuai Xu
- Engineering Research Center for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China
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10
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Chen F, Xiong S, Latha Gandla M, Stagge S, Martín C. Spent mushroom substrates for ethanol production - Effect of chemical and structural factors on enzymatic saccharification and ethanolic fermentation of Lentinula edodes-pretreated hardwood. BIORESOURCE TECHNOLOGY 2022; 347:126381. [PMID: 34813922 DOI: 10.1016/j.biortech.2021.126381] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
Spent mushroom substrates (SMS) from cultivation of shiitake (Lentinula edodes) on three hardwood species were investigated regarding their potential for cellulose saccharification and for ethanolic fermentation of the produced hydrolysates. High glucan digestibility was achieved during enzymatic saccharification of the SMSs, which was related to the low mass fractions of lignin and xylan, and it was neither affected by the relative content of lignin guaiacyl units nor the substrate crystallinity. The high nitrogen content in SMS hydrolysates, which was a consequence of the fungal pretreatment, was positive for the fermentation, and it ensured ethanol yields corresponding to 84-87% of the theoretical value in fermentations without nutrient supplementation. Phenolic compounds and acetic acid were detected in the SMS hydrolysates, but due to their low concentrations, the inhibitory effect was limited. The solid leftovers resulting from SMS hydrolysis and the fermentation residues were quantified and characterized for further valorisation.
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Affiliation(s)
- Feng Chen
- Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden.
| | - Shaojun Xiong
- Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden
| | | | - Stefan Stagge
- Umeå University, Department of Chemistry, SE-901 87 Umeå, Sweden
| | - Carlos Martín
- Umeå University, Department of Chemistry, SE-901 87 Umeå, Sweden; Inland Norway University of Applied Sciences, Department of Biotechnology, N-2317 Hamar, Norway
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Chen F, Martín C, Lestander TA, Grimm A, Xiong S. Shiitake cultivation as biological preprocessing of lignocellulosic feedstocks - Substrate changes in crystallinity, syringyl/guaiacyl lignin and degradation-derived by-products. BIORESOURCE TECHNOLOGY 2022; 344:126256. [PMID: 34737055 DOI: 10.1016/j.biortech.2021.126256] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
Formulation of substrates based on three hardwood species combined with modulation of nitrogen content by whey addition (0-2%) was investigated in an experiment designed in D-optimal model for their effects on biological preproceesing of lignocellulosic feedstock by shiitake mushroom (Lentinula edodes) cultivation. Nitrogen loading was shown a more significant role than wood species for both mushroom production and lignocellulose degradation. The fastest mycelial colonisation occurred with no nitrogen supplementation, but the highest mushroom yields were achieved when 1% whey was added. Low nitrogen content resulted in increased delignification and minimal glucan consumption. Delignification was correlated with degradation of syringyl lignin unit, as indicated by a significant reduction (41.5%) of the syringyl-to-guaiacyl ratio after cultivation. No significant changes in substrate crystallinity were observed. The formation of furan aldehydes and aliphatic acids was negligible during the pasteurisation and fungal cultivation, while the content of soluble phenolics increased up to seven-fold.
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Affiliation(s)
- Feng Chen
- Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden.
| | - Carlos Martín
- Umeå University, Department of Chemistry, SE-901 87 Umeå, Sweden; Inland Norway University of Applied Sciences, Department of Biotechnology, N-2317 Hamar, Norway
| | - Torbjörn A Lestander
- Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden
| | - Alejandro Grimm
- Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden
| | - Shaojun Xiong
- Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE-901 83 Umeå, Sweden
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Leong YK, Ma TW, Chang JS, Yang FC. Recent advances and future directions on the valorization of spent mushroom substrate (SMS): A review. BIORESOURCE TECHNOLOGY 2022; 344:126157. [PMID: 34678450 DOI: 10.1016/j.biortech.2021.126157] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Commercial mushrooms are cultivated on lignocellulose wastes, such as corncob, saw dust, straw and wood chips. Following the rapidly increasing global mushroom production, the efficient recycling and utilization of the by-product, known as spent mushroom substrate (SMS) has garnered much attention due to the serious pollution issues caused. Embracing the concept of 'circular economy', the SMSs have demonstrated immense potential in wide range of applications, including recycling as the substrate for new cultivation cycle of mushroom, biofertilizer and soil amendment, animal feed, renewable energy production and pollution bioremediation. The review provided an overview and recent advances focusing on these applications, analyzed the possible challenges and proposed future directions for sustainable development of global mushroom industry.
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Affiliation(s)
- Yoong Kit Leong
- Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan
| | - Te-Wei Ma
- Department of Chemical Engineering, Army Academy, Taoyuan 32092, Taiwan
| | - Jo-Shu Chang
- Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan
| | - Fan-Chiang Yang
- Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan.
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13
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Abstract
Fungal-based composites as substitutes for construction materials might represent a promising solution to reduce the environmental burdens of the building industry. Such composites can be produced biotechnologically through the cultivation of multicellular fungi that form dense mycelia whilst growing into and onto residual plant biomass from agriculture and forestry. As comprehensive environmental assessments are missing, this paper conducts a life cycle assessment for fungal-based composite bricks considering the categories of climate change, eutrophication, acidification, smog, water scarcity, and land use. Electricity for sterilization, incubation, and the drying process led to 81.4% of a total 0.494 total kg CO2 eq. for climate change and 58.7% of a total 9.39 × 10−4 kg SO2 eq. for acidification. Further, hemp shives and grain mix were identified as hotspots for eutrophication (77.7% of 6.02 × 10−4 kg PO4−3 eq.) and land use (81.8% of 19.4 kg Pt eq.). However, the use of hemp shives, rapeseed straw, or poplar wood chips did not differ in the environmental impacts. Further, lab-scale production was compared with industrial scale-up, which is mostly characterized by energy efficiency showing reduced impacts for all considered categories, e.g., a decrease of 68% in climate change. Recycling should be included in future studies as well as considering the use and end-of-life phase.
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14
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Haq IU, Nawaz A, Liaqat B, Arshad Y, Fan X, Sun M, Zhou X, Xu Y, Akram F, Jiang K. Pilot Scale Elimination of Phenolic Cellulase Inhibitors From Alkali Pretreated Wheat Straw for Improved Cellulolytic Digestibility to Fermentable Saccharides. Front Bioeng Biotechnol 2021; 9:658159. [PMID: 33777922 PMCID: PMC7995888 DOI: 10.3389/fbioe.2021.658159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 02/18/2021] [Indexed: 11/13/2022] Open
Abstract
Depleting supplies of fossil fuel, regular price hikes of gasoline and environmental deterioration have necessitated the search for economic and eco-benign alternatives of gasoline like lignocellulosic biomass. However, pre-treatment of such biomass results in development of some phenolic compounds which later hinder the depolymerisation of biomass by cellulases and seriously affect the cost effectiveness of the process. Dephenolification of biomass hydrolysate is well cited in literature. However, elimination of phenolic compounds from pretreated solid biomass is not well studied. The present study was aimed to optimize dephenoliphication of wheat straw using various alkalis i.e., Ca(OH)2 and NH3; acids i.e., H2O2, H2SO4, and H3PO4; combinations of NH3+ H3PO4 and H3PO4+ H2O2 at pilot scale to increase enzymatic saccharification yield. Among all the pretreatment strategies used, maximum reduction in phenolic content was observed as 66 mg Gallic Acid Equivalent/gram Dry Weight (GAE/g DW), compared to control having 210 mg GAE/g DW using 5% (v/v) combination of NH3+H3PO4. Upon subsequent saccharification of dephenoliphied substrate, the hydrolysis yield was recorded as 46.88%. Optimized conditions such as using 1%+5% concentration of NH3+ H3PO4, for 30 min at 110°C temperature reduced total phenolic content (TPC) to 48 mg GAE/g DW. This reduction in phenolic content helped cellulases to act more proficiently on the substrate and saccharification yield of 55.06% was obtained. The findings will result in less utilization of cellulases to get increased yield of saccharides by hydrolyzing wheat straw, thus, making the process economical. Furthermore, pilot scale investigations of current study will help in upgrading the novel process to industrial scale.
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Affiliation(s)
- Ikram Ul Haq
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China.,Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Ali Nawaz
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Badar Liaqat
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Yesra Arshad
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Xingli Fan
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Meitao Sun
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Xin Zhou
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Yong Xu
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Fatima Akram
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Kankan Jiang
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
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Shin SK, Ko YJ, Hyeon JE, Han SO. Studies of advanced lignin valorization based on various types of lignolytic enzymes and microbes. BIORESOURCE TECHNOLOGY 2019; 289:121728. [PMID: 31277889 DOI: 10.1016/j.biortech.2019.121728] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 06/26/2019] [Accepted: 06/28/2019] [Indexed: 06/09/2023]
Abstract
Lignin is a robust material that is considered useless because it has an inhibitory effect on microbes and acts as a physical barrier for cellulose degradation. Therefore, it has been removed from cellulosic biomass to produce high-value materials. However, lignin monomers can be converted to value-added chemicals such as biodegradable plastics and food additives by appropriately engineered microbes. Lignin degradation through peroxidase, laccase and other proteins with auxiliary activity is the first step in lignin valorization. Metabolic engineering of microorganisms for increased tolerance and production yield is the second step for lignin valorization. Here, this review offers a summary of current biotechnologies using various enzymatic activities, synergistic enzyme mixtures and metabolic engineering for lignin valorization in biorefinery.
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Affiliation(s)
- Sang Kyu Shin
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Young Jin Ko
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Jeong Eun Hyeon
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea; Department of Food Science and Biotechnology, College of Knowledge-Based Services Engineering, Sungshin Women's University, Seoul 01133, Republic of Korea; Department of Food and Nutrition, College of Health & Wellness, Sungshin Women's University, Seoul 01133, Republic of Korea
| | - Sung Ok Han
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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16
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Sekan AS, Myronycheva OS, Karlsson O, Gryganskyi AP, Blume Y. Green potential of Pleurotus spp. in biotechnology. PeerJ 2019; 7:e6664. [PMID: 30967974 PMCID: PMC6446892 DOI: 10.7717/peerj.6664] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 02/22/2019] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND The genus Pleurotus is most exploitable xylotrophic fungi, with valuable biotechnological, medical, and nutritional properties. The relevant features of the representatives of this genus to provide attractive low-cost industrial tools have been reported in numerous studies to resolve the pressure of ecological issues. Additionally, a number of Pleurotus species are highly adaptive, do not require any special conditions for growth, and possess specific resistance to contaminating diseases and pests. The unique properties of Pleurotus species widely used in many environmental technologies, such as organic solid waste recycling, chemical pollutant degradation, and bioethanol production. METHODOLOGY The literature study encompasses peer-reviewed journals identified by systematic searches of electronic databases such as Google Scholar, NCBI, Springer, ResearchGate, ScienceDirect, and ISI Web of Knowledge. The search scheme was divided into several steps, as described below. RESULTS In this review, we describe studies examining the biotechnological feasibility of Pleurotus spp. to elucidate the importance of this genus for use in green technology. Here, we review areas of application of the genus Pleurotus as a prospective biotechnological tool. CONCLUSION The incomplete description of some fungal biochemical pathways emphasises the future research goals for this fungal culture.
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Affiliation(s)
- Alona S. Sekan
- Institute of Food Biotechnology and Genomics, National Academy of Science of Ukraine, Kyiv, Ukraine
| | - Olena S. Myronycheva
- Division of Wood Science and Engineering, Department of Engineering Sciences and Mathematics, Lulea University of Technology, Skelleftea, Sweden
| | - Olov Karlsson
- Division of Wood Science and Engineering, Department of Engineering Sciences and Mathematics, Lulea University of Technology, Skelleftea, Sweden
| | | | - Yaroslav Blume
- Institute of Food Biotechnology and Genomics, National Academy of Science of Ukraine, Kyiv, Ukraine
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17
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Recent Advancements in Mycodegradation of Lignocellulosic Biomass for Bioethanol Production. Fungal Biol 2019. [DOI: 10.1007/978-3-030-23834-6_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Basic Mechanism of Lignocellulose Mycodegradation. Fungal Biol 2019. [DOI: 10.1007/978-3-030-23834-6_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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