| Summary: | Background: Orchidaceae species has developed into one of the significant industrial
products in agricultural industry globally. Beside as potted flower, they serve as cut
flowers since they have eye-catching pigments in the flower petals. Objective: The
main pigments from orchid’s flower petals were investigated and their relations with
phenylalanine ammonia-lyase (PAL) activity were evaluated. Results: Total
anthocyanin content of six different orchids’ petals was determined
specthrophotometrically and the value ranged from 0 mg/g (in Dendrobium Shavin
white) to 2.128 mg/g (in Mokara Aranda). Total anthocyanin content was found to be
the highest when compare to β-carotene and chlorophyll content. In correlation
analysis, PAL activity was found to be significant positive correlated with the
anthocyanin content. Conclusion: The results indicate the potential for PAL enzyme as
a biomarker for flower colour in orchids.
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