The HPLC grade b-carotene and lycopene standards were
obtained from Sigma (St Louis, MO, USA), while phytoene,
a-carotene, lutein, b-cryptoxanthin, and violaxanthin were obtained
from CaroteNature
The HPLC grade b-carotene and lycopene standards wereobtained from Sigma (St Louis, MO, USA), while phytoene,a-carotene, lutein, b-cryptoxanthin, and violaxanthin were obtainedfrom CaroteNature
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