Relationships between nitrate, chlorophyll and chromaticity values inrocket salad and parsley
Articles > Article · 2011
Authors: Özlem TUNCAY
AFRICAN JOURNAL OF BIOTECHNOLOGY, Journal Indexed in SCI Expanded, International, Scopus, 2011, vol 10, pp 17152-17158
DOI: 10.5897/ajb11.2646
Summary
The relationships between nitrate concentration, total chlorophyll, chlorophyll a and b concentrations, chromaticity values L*, a*, b*, hue and chroma in parsley ( Petroselinum crispum Mill.) and rocket salad ( Eruca sativa Mill.) were investigated. Every month, during 2004 and 2005, three samples for each leafy vegetable were obtained from the market, and after the measurement of colour with a tristimulus colorimeter as Commission Internationale De L'eclairage L*a*b*, nitrate, total chlorophyll, chlorophyll a and b concentrations were determined analytically. Correlation analysis showed that in both vegetables, there were highly significant correlations (P<0.001) between nitrate, total chlorophyll, chlorophyll a, L* and a* values, and it was possible to estimate total chlorophyll and nitrate concentrations by L* or a* values. Key words: Eruca sativa Mill., Petroselinum crispum Mill., nitrate concentration, leaf colour.