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Lawal OT, Onuegbu C, Afe AE, Olopoda IA, Igbe FO, Ojo FM, Sanni DM. Biochemical characterization of purified phytase produced from Aspergillus awamori AFE1 associated with the gastrointestinal tract of longhorn beetle ( Cerambycidae latreille). Mycologia 2024; 116:477-486. [PMID: 38819952 DOI: 10.1080/00275514.2024.2350337] [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: 04/12/2023] [Accepted: 04/24/2024] [Indexed: 06/02/2024]
Abstract
The need for industrially and biotechnologically significant enzymes, such as phytase, is expanding daily as a result of the increased use of these enzymes in a variety of operations, including the manufacture of food, animal feed, and poultry feed. This study sought to characterize purified phytase from A. awamori AFE1 isolated from longhorn beetle for its prospect in industrial applications. Ammonium sulfate precipitation, ion-exchange chromatography, and gel-filtration chromatography were used to purify the crude enzyme obtained from submerged fermentation using phytase-producing media, and its physicochemical characteristics were examined. The homogenous 46.8-kDa phytase showed an 8.1-fold purification and 40.7% recovery. At 70 C and pH 7, the optimum phytase activity was noted. At acidic pH 4-6 and alkaline pH 8-10, it likewise demonstrated relative activity of 88-95% and 67-88%, respectively. It showed 67-70% residual activity between 30 and 70 C after 40 min, and 68-94% residual activity between pH 2 and 12 after 2 h. The presence of Hg+, Mg2+, and Al3+ significantly decreased the enzymatic activity, whereas Ca2+ and Cu2+ enhanced it. Ascorbic acid increased the activity of the purified enzyme, whereas ethylenediaminetetraacetic acid (EDTA) and mercaptoethanol inhibited it. The calculated values for Km and Vmax were 55.4 mM and1.99 μmol/min/mL respectively. A. awamori phytase, which was isolated from a new source, showed unique and remarkable qualities that may find use in industrial operations such as feed pelleting and food processing.
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Affiliation(s)
- Olusola T Lawal
- Department of Medical Biochemistry, School of Basic Medical Sciences, Federal University of Technology, P.M.B. 704, Akure 340252 Nigeria
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Christian Onuegbu
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Ayoola E Afe
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
- State Key Laboratory of Animal Nutrition, Key Laboratory of Animal Genetic Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academic of Agricultural Sciences, Beijing 100193, China
| | - Isaac A Olopoda
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Festus O Igbe
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - Funmillayo M Ojo
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
| | - David M Sanni
- Enzyme and Microbial Technology Unit, Department of Biochemistry, School of Life Sciences, Federal University of Technology, P.M.B. 704, Akure 340252, Nigeria
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Urgessa OE, Koyamo R, Dinka H, Tefese K, Gemeda MT. Review on Desirable Microbial Phytases as a Poultry Feed Additive: Their Sources, Production, Enzymatic Evaluation, Market Size, and Regulation. Int J Microbiol 2024; 2024:9400374. [PMID: 38962397 PMCID: PMC11221984 DOI: 10.1155/2024/9400374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/27/2023] [Accepted: 05/14/2024] [Indexed: 07/05/2024] Open
Abstract
Poultry's digestive tract lacks hydrolytic phytase enzymes, which results in chelation of dietary minerals, vital amino acids, proteins, and carbohydrates, phytate-phosphate unavailability, and contamination of the environment due to phosphorus. Therefore, it is necessary to use exogenous microbial phytases as feed additive to chicken feed to catalyze the hydrolysis of dietary phytate. Potential sources of microbial isolates that produce desired phytases for chicken feed supplementation have been isolated from agricultural croplands. It is achievable to isolate phytase-producing bacteria isolates using both broth and agar phytase screening media. Potential substrates for submerged fermentation (SmF) for bacterial phytase production and solid-state fermentation (SSF) for fungal phytase production include rice and wheat bran. Following fermentation, saturated ammonium sulphate precipitation is typically used to partially purify microbial culture filtrate. The precipitate is then desalted. Measurements of the pH optimum and stability, temperature optimum and stability, metal ions stability, specificity and affinity to target substrate, proteolysis resistance, storage stability, and in vitro feed dephosphorylation are used to perform an enzymatic evaluation of phytase as an additive for poultry feed. The growth of the feed phytase market is primarily due to the expansion of chicken farms to meet the demand for meat and eggs from humans. The Food and Drug Administration in the USA and the European Food and Safety Authority are primarily in charge of putting rules pertaining to feed phytase use in chicken feed into effect. Conclusively, important components of the production of phytase additives for poultry feed include identifying a reliable source for potential microbe isolation, selecting an economical method of phytase production, thoroughly characterizing the biochemical properties of phytase, and comprehending the size and regulation of the current feed phytase market.
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Affiliation(s)
- Olyad Erba Urgessa
- School of Biological Sciences and Biotechnology, College of Natural and Computational Sciences, Haramaya University, Dire Dawa, Ethiopia
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
| | - Rufael Koyamo
- Department of Biology, College of Natural and Computational Sciences, Oda Bultum University, Chiro, Ethiopia
| | - Hunduma Dinka
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
| | - Ketema Tefese
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
- Institute of Pharmaceutical Science, Adama Science and Technology University, Adama, Ethiopia
| | - Mesfin Tafesse Gemeda
- Biotechnology and Bioprocess Center of Excellence, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia
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Khlebodarova TM, Bogacheva NV, Zadorozhny AV, Bryanskaya AV, Vasilieva AR, Chesnokov DO, Pavlova EI, Peltek SE. Komagataella phaffii as a Platform for Heterologous Expression of Enzymes Used for Industry. Microorganisms 2024; 12:346. [PMID: 38399750 PMCID: PMC10892927 DOI: 10.3390/microorganisms12020346] [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: 01/15/2024] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
In the 1980s, Escherichia coli was the preferred host for heterologous protein expression owing to its capacity for rapid growth in complex media; well-studied genetics; rapid and direct transformation with foreign DNA; and easily scalable fermentation. Despite the relative ease of use of E. coli for achieving the high expression of many recombinant proteins, for some proteins, e.g., membrane proteins or proteins of eukaryotic origin, this approach can be rather ineffective. Another microorganism long-used and popular as an expression system is baker's yeast, Saccharomyces cerevisiae. In spite of a number of obvious advantages of these yeasts as host cells, there are some limitations on their use as expression systems, for example, inefficient secretion, misfolding, hyperglycosylation, and aberrant proteolytic processing of proteins. Over the past decade, nontraditional yeast species have been adapted to the role of alternative hosts for the production of recombinant proteins, e.g., Komagataella phaffii, Yarrowia lipolytica, and Schizosaccharomyces pombe. These yeast species' several physiological characteristics (that are different from those of S. cerevisiae), such as faster growth on cheap carbon sources and higher secretion capacity, make them practical alternative hosts for biotechnological purposes. Currently, the K. phaffii-based expression system is one of the most popular for the production of heterologous proteins. Along with the low secretion of endogenous proteins, K. phaffii efficiently produces and secretes heterologous proteins in high yields, thereby reducing the cost of purifying the latter. This review will discuss practical approaches and technological solutions for the efficient expression of recombinant proteins in K. phaffii, mainly based on the example of enzymes used for the feed industry.
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Affiliation(s)
- Tamara M. Khlebodarova
- Kurchatov Genomic Center at Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (T.M.K.); (N.V.B.); (A.V.Z.); (A.V.B.); (A.R.V.)
- Laboratory Molecular Biotechnologies of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Natalia V. Bogacheva
- Kurchatov Genomic Center at Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (T.M.K.); (N.V.B.); (A.V.Z.); (A.V.B.); (A.R.V.)
- Laboratory Molecular Biotechnologies of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Andrey V. Zadorozhny
- Kurchatov Genomic Center at Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (T.M.K.); (N.V.B.); (A.V.Z.); (A.V.B.); (A.R.V.)
- Laboratory Molecular Biotechnologies of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alla V. Bryanskaya
- Kurchatov Genomic Center at Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (T.M.K.); (N.V.B.); (A.V.Z.); (A.V.B.); (A.R.V.)
- Laboratory Molecular Biotechnologies of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Asya R. Vasilieva
- Kurchatov Genomic Center at Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (T.M.K.); (N.V.B.); (A.V.Z.); (A.V.B.); (A.R.V.)
- Laboratory Molecular Biotechnologies of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Danil O. Chesnokov
- Sector of Genetics of Industrial Microorganisms of Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (D.O.C.); (E.I.P.)
| | - Elena I. Pavlova
- Sector of Genetics of Industrial Microorganisms of Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (D.O.C.); (E.I.P.)
| | - Sergey E. Peltek
- Kurchatov Genomic Center at Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (T.M.K.); (N.V.B.); (A.V.Z.); (A.V.B.); (A.R.V.)
- Laboratory Molecular Biotechnologies of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
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Singh B, Pragya, Tiwari SK, Singh D, Kumar S, Malik V. Production of fungal phytases in solid state fermentation and potential biotechnological applications. World J Microbiol Biotechnol 2023; 40:22. [PMID: 38008864 DOI: 10.1007/s11274-023-03783-1] [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: 08/05/2023] [Accepted: 09/28/2023] [Indexed: 11/28/2023]
Abstract
Phytases are important enzymes used for eliminating the anti-nutritional properties of phytic acid in food and feed ingredients. Phytic acid is major form of organic phosphorus stored during seed setting. Monogastric animals cannot utilize this phytate-phosphorus due to lack of necessary enzymes. Therefore, phytic acid excretion is responsible for mineral deficiency and phosphorus pollution. Phytases have been reported from diverse microorganisms, however, fungal phytases are preferred due to their unique properties. Aspergillus species are the predominant producers of phytases and have been explored widely as compared to other fungi. Solid-state fermentation has been studied as an economical process for the production of phytases to utilize various agro-industrial residues. Mixed substrate fermentation has also been reported for the production of phytases. Physical and chemical parameters including pH, temperature, and concentrations of media components have significantly affected the production of phytases in solid state fermentation. Fungi produced high levels of phytases in solid state fermentation utilizing economical substrates. Optimization of culture conditions using different approaches has significantly improved the production of phytases. Fungal phytases are histidine acid phosphatases exhibiting broad substrate specificity, are relatively thermostable and protease-resistant. These phytases have been found effective in dephytinization of food and feed samples with concomitant liberation of minerals, sugars and soluble proteins. Additionally, they have improved the growth of plants by increasing the availability of phosphorus and other minerals. Furthermore, phytases from fungi have played an important roles in bread making, semi-synthesis of peroxidase, biofuel production, production of myo-inositol phosphates and management of environmental pollution. This review article describes the production of fungal phytases in solid state fermentation and their biotechnological applications.
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Affiliation(s)
- Bijender Singh
- Laboratory of Bioprocess Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India.
- Department of Biotechnology, Central University of Haryana, Jant-Pali, Mahendergarh, 123031, Haryana, India.
| | - Pragya
- Laboratory of Bioprocess Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - Santosh Kumar Tiwari
- Department of Genetics, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - Davender Singh
- Department of Physics, RPS Degree College, Mahendergarh, 123029, Haryana, India
| | - Sandeep Kumar
- Department of Biotechnology, Shobhit Institute of Engineering and Technology (Deemed to Be University), Modipurum, Meerut, 250110, UP, India
| | - Vinay Malik
- Department of Zoology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
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Sanni DM, Jimoh MB, Lawal OT, Bamidele SO. Purification and biochemical characterization of phytase from Bacillus cereus isolated from gastrointestinal tract of African giant snail (Achatina fulica). Int Microbiol 2023; 26:961-972. [PMID: 37020067 DOI: 10.1007/s10123-023-00350-4] [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: 09/08/2022] [Revised: 03/14/2023] [Accepted: 03/20/2023] [Indexed: 04/07/2023]
Abstract
Phytases are specialized enzymes meant for phytic acid degradation. They possess ability to prevent phytic acid indigestion, including its attendant environmental pollution. This study was aimed at investigating biochemical properties of purified phytase of B. cereus isolated from Achatina fulica. Phytase produced from Bacillus cereus that exhibited optimal phytate degrading-ability of all the bacteria isolated was purified in a three-step purification. The biochemical properties of the purified enzyme were also determined. The phytase homogeny of approximately 45 kDa exhibited 12.8-purification fold and 1.6% yield with optima phytate degrading efficiency and maximum stability at pH 7 and 50 °C. Remaining activity of 52 and 47% obtained between 60 and 70 °C after 2 h further established thermostability of the purified phytase. Mg2+ and Zn2+ enhanced phytate hydrolysis by the enzyme, while Na+ showed mild inhibition but Hg2+ severely inhibited the enzymatic activity. Km and Vmax were estimated to be 0.11 mM and 55.6 μmol/min/mL, displaying enzyme-high substrate affinity and catalytic efficiency, respectively. Phytase purified from Bacillus cereus, isolated from African giant snails, has shown excellent characteristics suitable for phytic acid hydrolysis and could be employed in industrial and biotechnological applications.
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Affiliation(s)
| | | | - Olusola Tosin Lawal
- Department of Biochemistry, Federal University of Technology, Akure, Nigeria
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Capusoni C, Serra I, Donzella S, Compagno C. Screening For Yeast Phytase Leads to the Identification of a New Cell-Bound and Secreted Activity in Cyberlindnera jadinii CJ2. Front Bioeng Biotechnol 2021; 9:662598. [PMID: 34109165 PMCID: PMC8181137 DOI: 10.3389/fbioe.2021.662598] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/29/2021] [Indexed: 12/18/2022] Open
Abstract
Phytic acid is an anti-nutritional compound able to chelate proteins and ions. For this reason, the food industry is looking for a convenient method which allows its degradation. Phytases are a class of enzymes that catalyze the degradation of phytic acid and are used as additives in feed-related industrial processes. Due to their industrial importance, our goal was to identify new activities that exhibit best performances in terms of tolerance to high temperature and acidic pH. As a result of an initial screening on 21 yeast species, we focused our attention on phytases found in Cyberlindnera jadinii, Kluyveromyces marxianus, and Torulaspora delbrueckeii. In particular, C. jadinii showed the highest secreted and cell-bound activity, with optimum of temperature and pH at 50°C and 4.5, respectively. These characteristics suggest that this enzyme could be successfully used for feed as well as for food-related industrial applications.
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Affiliation(s)
- Claudia Capusoni
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Immacolata Serra
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Silvia Donzella
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Concetta Compagno
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
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Isolation and molecular identification of industrially important enzyme producer yeasts from tree barks and fruits. Arch Microbiol 2020; 203:1079-1088. [PMID: 33156373 DOI: 10.1007/s00203-020-02104-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/27/2020] [Accepted: 10/19/2020] [Indexed: 10/23/2022]
Abstract
This study aimed to identify the yeast strains associated with the tree bark samples collected from the Aegean and Marmara regions and from rotten fruit samples. Fifty-one yeast strains were successfully isolated and screened for their abilities to produce industrially important extracellular enzymes. Thirty isolates demonstrated ability to produce at least two different enzymes and were selected for subsequent molecular identification using sequence analysis of ITS region and D1/D2 domain of the 26S rDNA. The most prevalent strains belonged to Papiliotrema laurentii (%23), Papiliotrema terrestris (%13) and Candida membranifaciens (%10). Papiliotrema laurentii and Papiliotrema terrestris recorded the highest enzymatic activities for all the screened enzymes. To the best of our knowledge, this is the first report that identifies the yeast strains associated with the tree barks of Turkey and among the limited comprehensive studies that screened considerable number of isolates for their ability to produce several industrially important enzymes.
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Jatuwong K, Suwannarach N, Kumla J, Penkhrue W, Kakumyan P, Lumyong S. Bioprocess for Production, Characteristics, and Biotechnological Applications of Fungal Phytases. Front Microbiol 2020; 11:188. [PMID: 32117182 PMCID: PMC7034034 DOI: 10.3389/fmicb.2020.00188] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 01/27/2020] [Indexed: 12/30/2022] Open
Abstract
Phytases are a group of enzymes that hydrolyze the phospho-monoester bonds of phytates. Phytates are one of the major forms of phosphorus found in plant tissues. Fungi are mainly used for phytase production. The production of fungal phytases has been achieved under three different fermentation methods including solid-state, semi-solid-state, and submerged fermentation. Agricultural residues and other waste materials have been used as substrates for the evaluation of enzyme production in the fermentation process. Nutrients, physical conditions such as pH and temperature, and protease resistance are important factors for increasing phytase production. Fungal phytases are considered monomeric proteins and generally possess a molecular weight of between 14 and 353 kDa. Fungal phytases display a broad substrate specificity with optimal pH and temperature ranges between 1.3 and 8.0 and 37-67°C, respectively. The crystal structure of phytase has been studied in Aspergillus. Notably, thermostability engineering has been used to improve relevant enzyme properties. Furthermore, fungal phytases are widely used in food and animal feed additives to improve the efficiency of phosphorus intake and reduce the amount of phosphorus in the environment.
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Affiliation(s)
- Kritsana Jatuwong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Ph.D. Degree Program in Applied Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Nakarin Suwannarach
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Jaturong Kumla
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Watsana Penkhrue
- School of Preclinic, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Pattana Kakumyan
- School of Science, Mae Fah Luang University, Chiang Rai, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok, Thailand
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de Oliveira Ornela PH, Souza Guimarães LH. Purification and characterization of an alkalistable phytase produced by Rhizopus microsporus var. microsporus in submerged fermentation. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.03.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Purification and characterization of phytase from Aspergillus fumigatus Isolated from African Giant Snail (Achatina fulica). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2018.11.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Evaluation of Candida tropicalis (NCIM 3321) extracellular phytase having plant growth promoting potential and process development. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2017.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Free and immobilized Aspergillus oryzae SBS50 producing protease-resistant and thermostable phytase. 3 Biotech 2017; 7:213. [PMID: 28669072 DOI: 10.1007/s13205-017-0804-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/06/2017] [Indexed: 10/19/2022] Open
Abstract
Optimization for enhanced phytase production by Aspergillus oryzae SBS50 in submerged fermentation was investigated using Taguchi design. In first step design, starch, beef extract, magnesium sulphate, ferrous sulphate and Tween 80 were identified as significant factors affecting phytase production. These significant factors were further optimized at four different levels using a second Taguchi design and were observed that 1% starch, 2% beef extact, 3% Tween 80, 0.1% magnesium sulphate and 0.225% ferrous sulphate supported maximum phytase production (47,432 U/L). The use of Taguchi designed experiments resulted in 14.9-fold enhancement in phytase production compared to the medium optimized by 'one variable at a time' approach. Furthermore, 4% agar immobilized conidiospores of A. oryzae supported high phytase production compared with free cells and other matrices. Agar-immobilized conidiospores resulted in sustained phytase production up to eight repeated batch cycles followed by a decrease in enzyme titres.
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Salmon DNX, Fendrich RC, Cruz MA, Montibeller VW, Vandenberghe LPS, Soccol CR, Spier MR. Bioprocess for phytase production by Ganoderma sp. MR-56 in different types of bioreactors through submerged cultivation. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lazarte CE, Vargas M, Granfeldt Y. Zinc bioavailability in rats fed a plant-based diet: a study of fermentation and zinc supplementation. Food Nutr Res 2015; 59:27796. [PMID: 26626410 PMCID: PMC4666894 DOI: 10.3402/fnr.v59.27796] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 10/20/2015] [Accepted: 10/21/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Zinc deficiency is a significant problem, in developing countries and in vegetarians, which can be caused by plant-based diets. Thus, dietary strategies, such as fermentation, to improve zinc bioavailability of diets should be investigated. OBJECTIVE To improve zinc bioavailability in a plant-based diet by the inclusion of fermented food. DESIGN Cassava tubers were fermented and made to replace the unfermented cassava in a basal plant-based diet, and compared with plant-based diets with and without zinc supplement. The zinc bioavailability of the diets was evaluated in Wistar rats that were fed these diets for 28 days. The evaluation was for zinc apparent absorption (ZnAA), serum zinc levels, and zinc deposits in liver and femur; in addition, the feed efficiency ratio (FER) of the diets and femur weight (FW) of the rats were evaluated. RESULTS During the cassava fermentation, lactic acid increased and pH decreased (from 6.8 to 3.9), which is favorable for native phytase activity, resulting in a 90.2% reduction of phytate content in cassava. The diet containing fermented cassava showed significantly higher levels of ZnAA, FER, and FW (p<0.001). Moreover, the zinc levels in serum and femur were significantly higher (p<0.001) compared with the results of the diet with unfermented cassava. The results clearly show a higher zinc bioavailability in the diet containing fermented cassava and are comparable with the results obtained with the plant-based diet with zinc supplement. CONCLUSIONS In conclusion, the fermentation of cassava reduces the phytate content. The diet containing the fermented cassava represents a better nutritional alternative than the diet with unfermented cassava and is comparable with the zinc-supplemented diets.
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Affiliation(s)
- Claudia E Lazarte
- Department of Food Technology, Engineering and Nutrition, Lund University, Lund, Sweden.,Food and Natural Products Center, San Simon University, Cochabamba, Bolivia;
| | - Mirian Vargas
- Food and Natural Products Center, San Simon University, Cochabamba, Bolivia
| | - Yvonne Granfeldt
- Department of Food Technology, Engineering and Nutrition, Lund University, Lund, Sweden
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Coban HB, Demirci A, Turhan I. Enhanced Aspergillus ficuum phytase production in fed-batch and continuous fermentations in the presence of talcum microparticles. Bioprocess Biosyst Eng 2015; 38:1431-6. [PMID: 25732541 DOI: 10.1007/s00449-015-1384-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/25/2015] [Indexed: 11/29/2022]
Abstract
This study aimed to enhance Aspergillus ficuum phytase production in fed-batch and continuous fermentations with addition of talcum microparticles. Phytase activity almost doubled in fed-batch and continuous fermentations by addition of 15 g/l of talcum compared to the control. Effect of talcum on fungal morphology was also shown that addition of talcum provided smaller fungal pellets and more homogenized fermentation broth compared to the control. Average fungal pellet radius decreased from 500 to 100 µm by addition of 15 g/l of talcum in the bioreactors. Also, 15 g/l talcum addition increased phytase productivity and optimum dilution rate in the continuous fermentations from 0.293 to 0.621 U/ml/h and from 0.09 to 0.1/h, respectively, compared to control.
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Affiliation(s)
- Hasan B Coban
- Department of Agricultural and Biological Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
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Coban HB, Demirci A, Turhan I. Microparticle-enhanced Aspergillus ficuum phytase production and evaluation of fungal morphology in submerged fermentation. Bioprocess Biosyst Eng 2015; 38:1075-80. [PMID: 25555703 DOI: 10.1007/s00449-014-1349-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 12/25/2014] [Indexed: 10/24/2022]
Abstract
Phytase can be used in animal's diets to increase the absorption of several divalent ions, amino acids and proteins and to decrease the excessive phosphorus release in manure to prevent negative effects on the environment. This study aimed to enhance the current submerged fungal phytase productions with a novel fermentation technique by evaluating the effect of the various microparticles on Aspergillus ficuum phytase production. It was observed that microparticles prevented bulk fungal pellet growth, decreased average fungal pellet size and significantly increased phytase activity in the submerged fermentation. Microbial structure imaging results showed that the average fungal pellet radius decreased from 800 to 500 and 200 µm by addition of 15 g/L aluminum oxide and talcum, respectively, in shake-flask fermentation. Also, addition of 15 g/L of talcum and aluminum oxide increased phytase activity to 2.01 and 2.93 U/ml, respectively, compared to control (1.02 U/ml) in shake-flask fermentation. Additionally, phytase activity reached 6.49 U/ml within 96 h of fermentation with the addition of 15 g/L of talcum, whereas the maximum phytase activity was only 3.45 U/ml at 120 h of fermentation for the control in the 1-L working volume bioreactors. In conclusion, microparticles significantly increased fungal phytase activity and production yield compared to control fermentation.
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Affiliation(s)
- Hasan B Coban
- Department of Agricultural and Biological Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
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Ribeiro Corrêa TL, de Queiroz MV, de Araújo EF. Cloning, recombinant expression and characterization of a new phytase from Penicillium chrysogenum. Microbiol Res 2015; 170:205-12. [DOI: 10.1016/j.micres.2014.06.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 06/09/2014] [Accepted: 06/15/2014] [Indexed: 11/30/2022]
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Coban HB, Demirci A. Enhanced submerged Aspergillus ficuum phytase production by implementation of fed-batch fermentation. Bioprocess Biosyst Eng 2014; 37:2579-86. [DOI: 10.1007/s00449-014-1236-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/04/2014] [Indexed: 10/25/2022]
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