Characterization of anthocyanins in Kenyan teas: Extraction and identification

Stability and degradation kinetics of crude anthocyanin extracts from H. sabdariffa

“…They contribute to the vibrant red, blue, purple, violet and orange colours of various plants. They can be found in numerous plant species such as red grapes, berries, purple fleshed sweet potato, radish and red cabbage (Kerio et al, 2012;Castañeda-Dvando et al, 2009;Gradinaru et al, 2003). There are more than 500 different anthocyanins and 23 anthocyanidins.…”

Improved Characterization of Polyphenols Using Liquid Chromatography

“…SPE is an extraction technique used as a clean-up procedure and a pre-concentration step with crude plant, biological, environmental, food, and pharmaceutical samples Kerio et al, 2012;Martinez-Huelamo et al, 2009;Navas, 2012;Olmos-Espejel et al, 2012).…”

Molecular Markers

“…In tea, morphological markers had been used to study genetic diversity (Wickramaratna 1981;Toyao and Takeda 1999), variation (Gunasekara et al 2001;Piyasundara et al 2006;Su et al 2007), phylogeny, and classification (Chen et al 2005a;Vo 2006;Piyasundara et al 2008;Pi et al 2009). For example, in Sri Lanka, 20 genotypes of tea were characterized using 13 morphological descriptors and were grouped into Hazarika and Mahanta (1984) Epicuticular waxes Kabir et al (1991) Dry matter production and partitioning Magambo and Cannell (1981) Green leaf catechin and ratio of dihydroxylated to trihydroxylated catechins Magoma et al (2000) Root lengths Nagarajah and Ratnasurya (1981) Catechins, Caffeine, and volatile flavour compounds Owuor and Obanda (1998); Singh et al (2013) Leaf, floral biology, and growth morphology Sealy (1958) Chloroform test Sanderson (1964) Pruning litter weights Satyanarayan and Sharma (1982) Anthocyanin pigmentations in young leaves Satyanarayan and Sharma (1986); Kerio et al (2012) Evenness of the flash, plucking density, and recovery time of pruning Singh (1999) Terpene index Takeo (1981) Leaf pubescences Wight and Barua (1954) …”