Acknowledgement
The authors acknowledge the staff of the Virology Unit of the Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, where the molecular characterization of the isolates was carried out.
References
- Ratnasri PV, Lakshmi BKM, Devi KA, Helmalatha KPJ. 2014. Isolation, characterisation of Aspergillus fumigatus and optimization of cultural conditions for amylase production. Int. J. Res. Eng. Technol. 3: 457-463.
- Abe J, Nukajoma R, Nagano H, Hijkeri S. 1988. Properties of the raw starch digesting amylase of Aspergillus spp. k-27: synergistic action of glucoamylase and α-amylase. Carbohydr. Res. 75: 85-92.
- Gupta R, Gigras P, Mohapatra H, Goswami VK, Chauhan B. 2003. Microbial amylases: A biotechnological perspective. Process Biochem. 38: 599-616. https://doi.org/10.1016/S0032-9592(02)00184-X
- Sanraj P, Stella D. 2013. Fungal Amylase- A Review. Int. J. Microbiol. Res. 4: 203-211.
- Stamford TLM, Stamford NP, Coelho LCBB, Araujo JM. 2002. Production and characterization of a thermostable glucoamylase from Streptosporangium spp. endophyte of maize leaves. Bioresour. Technol. 83: 105-109. https://doi.org/10.1016/S0960-8524(01)00206-1
- Kareem SO, Akpan I, Popoola TOS, Sanni L. 2014. Purification and characterisation of thermostable glucoamylase from Rhizopus oligosporous SK5 mutant obtained through UV radiation and chemical mutagenesis. Biokemistri 26: 9-24.
- Enyioha EJ, Ameh JB, Umoh VJ. 2004. Evaluation and enhancement of amylase production by local strains of Streptomyces sp. Nig. J. Microb. 18: 300-308.
- Hanson EL, Howell CR. 2002. Biocontrol efficacy and other characteristics of protoplast fusants between Trichoderma koningii and T. virens. Mycol. Resour. 106: 321-328. https://doi.org/10.1017/S0953756202005592
- Savitha S, Sadhasivam S, Swaminathan K. 2010. Regeneration and molecular characterization of an intergeneric hybrid between Graphium putredinis and Trichoderma harzianum by protoplasmic fusion. Biotechnol. Adv. 28: 285-292. https://doi.org/10.1016/j.biotechadv.2009.12.007
- Ahmed M, Berkly E. 2006. Gene transfer between different Trichoderma species and Aspergillus niger through intergeneric protoplast fusion to convert ground rice straw to citric acid and cellulase. Appl. Biochem. Biotechnol. 135: 117-132. https://doi.org/10.1385/ABAB:135:2:117
- Hassan MM, El-Awady MA, Lakhani HN, El-Tarras AE. 2013. Improvement of biological control activity in Trichoderma against some grapevine pathogens using protoplast fusion. Life Sci. 10: 2275-2283.
- Omoniyi MC. 2013. Optimization of α-amylase and glucoamylase production from three fungal strains isolated from Abakaliki Ebonyi State. Euro. J. Exp. Biol. 3: 26-34.
- Kasim EA. 1983. Effect of the physiological condition on alpha amylase and glucoamylase formation by selected strain of Aspergillus oryzae. Mikrobiologiia 53: 422-427.
- Gupta A, Gupta VK, Modi DR, Yadava LP. 2008. Purification and characterization of α-amylase from Aspergillus niger. Biotechnol. 7: 551-556. https://doi.org/10.3923/biotech.2008.551.556
- Roheena A, Naeema S, Mehwish I, Shagufta N, Tehreema I. 2014. Optimization of cultural conditions for the production of alphaamylase Aspergillus niger (BTM-26) in solid state ferementation. Pak. J. Bot. 46: 1071-1078.
- Bussamara R, Dall'Agno L, Schrank A, Fernandes KF, Vainstein MH. 2012. Optimal conditions for continuous immobilization of Pseudozyma hubeiensis (strain hb85a) lipase by adsorption in a packed-bed reactor by response surface methodology. Enzyme Res. 2012: 329178. https://doi.org/10.1155/2012/329178
- Manohar B, Divakar S. 2004. Applications of surface plots and statistical design to selected lipase catalyzed esterification reactions. Process Biochem. 39: 847-853. https://doi.org/10.1016/S0032-9592(03)00192-4
- Afshin E, Zaliha RN, Rahman RA, Ch'ng DHE, Basri M, Salle AB. 2008. A modelling study by response surface methodology and artificial neural network on culture parameters optimization for thermostable lipase production from a newly isolated Thermophilic geobacillus spp. strain ARM. BMC Biotechnol. 96: 8-15.
- Kocher GS, Uppal S. 2013. Fermentation variables for the fermentation of glucose and xylose using Saccharomyces cerevisiae Y2034 and Pachyso lantannophilus Y-2460. Ind. J. Biotechnol. 10: 531-536.
- Akpan I, Bankole MO, Adesmowo AM, Lantunde-Dada GO. 1999. Production of amylase by Aspergillus niger using rice bran and agricultural material. Trop. Sci. 39: 77-79.
- Akpan I, Adelaja FA. 2004. Production and stabilization of amylase preparations from rice bran solid medium. World. J. Microb. Biotechnol. 20: 47-50. https://doi.org/10.1023/B:WIBI.0000013294.14446.cf
- Felsenstein J. 1985. Confidence limits on phylogenies: An approach using the bootstrap. Evolution 39: 783-791. https://doi.org/10.1111/j.1558-5646.1985.tb00420.x
- Koc O, Metin K. 2010. Purification and characterization of a thermostable glucoamylase produced by Aspergillus flavus HBF34. Afr. J. Biotechnol. 9: 3414-3424.
- Shaw R. 1969. Analysis of potato sugars by gas chromatography. Am. Potato J. 46: 201-213. https://doi.org/10.1007/BF02863048
- Saitou N, Nei M. 1987. The neighbor-joining method: A new method for reconstructing phylogenetic trees. Mol. Biol. Evol. 4: 406-425.
- Nei M, Kumar S. 2000. Molecular evolution and phylogenetics. pp. 54-60. Oxford University Press, New York.
- Tamura K, Stecher G, Peterson D, Filipski A, Kumar S. 2013. MEGA6: Molecular evolutionary genetics analysis version 6.0. Mol. Biol. Evol. 30: 2725-2729. https://doi.org/10.1093/molbev/mst197
- Singh S, Sharma V, Soni ML. 2011. Biotechnological application of industrially important amylase enzyme. Int. J. Pharma Bio Sci. 2: 486-496.
- Pandey A. 1995. Glucoamylase research: An overview. Starch/Starke 47: 439-445. https://doi.org/10.1002/star.19950471108
- Takahashi T, Tsuchida Y, Irie M. 1978. Purification and some properties of three forms of glucoamylase from Rhizopus species. J. Biochem. 84: 1183-1194. https://doi.org/10.1093/oxfordjournals.jbchem.a132235
- Gomes E, Souz SR, Grandi RP, Silva ED. 2005. Production of thermostable glucoamylase by newly isolated A. flavus. 1.1. and Thermomyces lanuginous A 13.3. Braz. J. Microbiol. 36: 75-82.
- El-Abyad MS, El-Shanshoury AR, Hafez M. 1995. Purification and characterisation of the glucoamylase produced by a strain of Aspergillus flavus. Microbios. 80: 7-15.
- Ajayi AO, Fagade OE. 2007. Heat activation and stability of amylases from Bacillus species. Afr. J. Biotechnol. 6: 1181-1184.
- Uguru GC, Akinyanju JA, Sani A. 1997. The use of yam peel for growth of locally isolated Aspergillus niger and amylase production. Enzyme Microbiol. Technol. 23: 107-112.
- Hernandez MS, Rodriguez MR, Guerra NP, Roses RP. 2006. Amylase production by Aspergillus niger in submerged cultivation on two wastes from food industries. J. Food Process Eng. 73: 93-100. https://doi.org/10.1016/j.jfoodeng.2005.01.009
- Mtidieri S, Souza Martinelli AH, Schrank A, Vainstein MH. 2006. Enzymatic detergent formulation containing amylase from Aspergillus niger: A comparative study with commercial detergent formulations. Bioresour. Technol. 97: 1217-1224. https://doi.org/10.1016/j.biortech.2005.05.022
- Yamamoto M, Tanaka Y, Horikoshi K. 1972. Alkaline amylases of alkalophilic bacteria. Agric. Biol. Chem. 30: 1819-1823. https://doi.org/10.1080/00021369.1972.10860480
- Forgarty WM, Kelly CT. 1979. Starch degrading enzymes of microbial origin. In: Bull AH (ed). pp 87-150. Progress in Industrial Microbiology, Elsevier, Amsterdam.
- Varalakshmi KN, Kumudini BS, Nandini BN, Solomon J, Suhas R, Mahesh B. 2009. Production and characterization of α-amylase from Aspergillus niger JGI 24 isolated in Bangalore. Pol. J. Microbiol. 8: 29-36.
- Murali KC, Sasidhar P, Suresh C. 2010. Isolation and production of extracellular amylase from newly isolated Aspergillus species by submerged fermentation. Curr. Trends Biotechnol. Pharm. 4: 795-800.
- Gangadharan D, Sivaramakrishnan S, Madhavan KN, Pandey A. 2006. Solid culturing of Bacillus amyloliquefaciens for alpha amylase production. Food Technol. Biotechnol. 442: 269-274.
- Farid MAF, Mohammed H, Shata AH. 2011. Amylase production from Aspergillus oryzae LS1 by solid-state fermentation and its use for hydrolysis of wheat flour. Iran. J. Biotechnol. 9: 267-274.
- Tanyildizi MS, Ozer D, Elibol M. 2005. Optimization of α-amylase production by Bacillus sp. using response surface methodology. Process Biochem. 40: 2291-2296. https://doi.org/10.1016/j.procbio.2004.06.018
- Acikel U, Ersan M, SagAcikel Y. 2010. Optimization of critical medium components using response surface methodology for lipase production by Rhizopus delemar. Food Bioprod. Process 88: 31-39. https://doi.org/10.1016/j.fbp.2009.08.003
- Shabbiri K, Adnan A. 2011. Bio-statistically optimized production of lipases by Brevibacterium linens DSM 20158. World. Appl. Sci. J. 13: 1059-1066.
- Gasteiger E, Hoogland C, Gattiker A, Duvaud S, Wilkins MR, Appel RD. 2005. Protein identification and analysis tools on the ExPASy server, pp. 571-607. In: Walker JM, editor. The Proteomics Protocols Handbook, New York: Humana Press, 2005.