| Summary: | 碩士 === 國立臺灣大學 === 森林學系 === 84 === Bamboo is one of the most important forest resources in
Taiwan. Bamboo culm possesses an attractive green color due to
the pre- sence of chlorophylls on its epidermis. However,
after drying ,storage, or other utilization processes, the
chlorophylls on the bamboo culm surfaces are easily degraded
and consequently the green color fades, which significantly
reduces the aesthetic and economicvalue of bambooproducts.
Thus, in order to conserve the original green color of bamboo,
the primary objective of this stu- dy is to find some
appropriate inorganic salts and their treat- ment conditions to
achieve the culms of Ma bamboo ( Dendrocalamus latiflorus Munro
) with the green color conservation. The second objective is
to investigate the relationship between the inorgan- ic salts
and chlorophylls in order to elucidate the mechanisms of green
color conservation. Experimental results revealed that Ma
bamboo treated with chemicals with the lower toxicity such as
CCP (chromium-copper-phosphorous formulation) or CP(chromium-
phospho- rous formulation) exhibited a better green color
conservation effect than that treated with the boliden K-33.
Specially, CP treated bamboo has the best green color
conservation effect and higher green color intensity. Results
obtained from the ESCA ana- lysis also reveal that it can
inhibit the photooxidation during weathering. As for the
distribution of each component of the inorganic salts used,
Cr and P were dispersed mainly on the epidermis of bamboo,
followed by is the part near the conduct- ing tissues of
vascular bundle.Almost no Cu could be found in the bamboo
tissue. Furthermore,the ultraviolet light exposure exerted a
positive influence on the color of chromic acidtreated Ma bam-
boo, and interestingly, the green color conservation effect
was significantly enhanced by increasingthe exposure time.
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