| Summary: | 碩士 === 國立臺灣大學 === 農業化學系 === 85 === The pH of aqueous phase with various test organisms and
different inoculum size of C.resinae for three months at 25℃
both decreased from pH 5.61. In inoculating various test
organisms, the decrement of pH of aqueous phase with Fusarium
sp. AM-F1 is the most, and Penicillium sp. AM-F5 is the least.
In inoculating different inoculum size of C.resinae, the
decrement of pH of the aqueous phase with inoculum of 108 is the
most, and inoculum of 102 is the least. Protein content of
aqueous phase increasef 嗈th incubation. In inoculating various
test organisms, the increment of protein content of aqueous
phase with Fusarium sp. AM-F1 is the most, and Ps. fluorescens
AM-B9 is the least. In inoculating different inoculum size of C.
resinae, the increment of protein content of aqueous phase with
inoculum of 103 is the most, and inoculum of 107 is the least.
Microbially induced corrosion on aluminum alloy A356 with
inoculation for three months was serious but no corrosion
phenomenon was found on anodized and chromate conversion coated
aluminum alloy A356 . Weight losses of aluminum alloy A356 was
more than anodized and chromate conversion coated aluminum
alloys. Anodized and chromate conversion coated aluminum alloys
had the best resistance to the aggression of microbes.
Penicillium sp. AM-F5 and Candida sp. had highest corrosive
capability of test strains, whereas Ps. fluorescens AM-B9 had
lowest capability. Inoculum of 108 had highest corrosive
capability of different inoculum size of C. resinae, whereas
inoculum of 102 had lowest capability. Analysis of energy
dispersive spectrometer (EDS) revealed that the amount of
aluminum decreased at the corrosion area and silicon increased
at the pitting regions. In detecting the presence of live
microorganisms in fuel oil JP-10, color change and growth of
microorganisms were observed visibly in broth for five days of
incubation but inoculum of 102 was not obvious in color change.
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