Control of Aspergillus ochraceus and Pennicillium viridicatum using ammonia on corn and copra
1994
Garcia, R.P. | Pantua, M.V.
Results showed that (NH4OH) was more effective in inhibiting colony diameter and sporulation than [(NH3)2 SO4], hence, the former was prioritized in further tests. No mycelial growth was exhibited at 2.0 percent on agar and at 1.0 and 2.0 percent NH4OH on broth after 7-10 days. Sporulation was similarly abundant at 0.05, 0.1 and 0.5 percent NH4OH. Spore germination was completely inhibited at 1.0 and 2.0 percent NH4OH after 24-36 hours. Ochratoxin was not detected in Czapek's broth treated with 2.0 percent and very minimal with 1.8 and 0.5 percent. Small scale storage of corn and copra revealed that the treated samples have low incidence of P. viridicatum infection compared with the control. Seed germination of corn was higher at 2.0 percent NH4OH treated samples compared with the other treatments. The experimental results clearly indicated that NH4OH is a very promising control against A. ochraceus and P. viridicatum
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