Diversity pattern on phytochemical traits of coffee bean skin from various species and harvesting methods
DOI:
https://doi.org/10.25186/.v19i.2251Abstract
Coffee is a well-known beverage consumed widely all around the globe. During its processing, a vast amount of waste was generated that can be utilized due to its bioactive compounds beneficial for human health. This study aimed to investigate the diversity pattern of three coffee pulp species based on phytochemical properties (total phenolic content (TPC), caffeine content, and antioxidant activity using the DPPH assay) exhibited by the skin of three coffee bean species: Coffea arabica (Arabica), Coffea canephora (Robusta), and Coffea liberica (Liberica) harvested with different technique (selective and strip picking). This study revealed that species and harvesting techniques significantly influenced the phytochemical properties of the coffee bean skin (CBS). The diversity pattern is shown by Principal Component Analysis (PCA), which has a correlation between Robusta and TPC and Arabica with Caffeine content. The findings from this study show the possibility of utilizing the waste from the coffee industry, especially the skin, to be used further in the development of products with considerable amounts of bioactive compounds.
Key words: Coffee bean skin; phytochemicals; principal component analysis; selective picking; strip picking.
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