TY - JFULL AU - Irisa Murniece and Zanda Kruma and Ilze Skrabule PY - 2012/8/ TI - Carotenoids and Colour Before and After Storage of Organically and Conventionally Cultivated Potato Genotypes in Latvia T2 - International Journal of Agricultural and Biosystems Engineering SP - 502 EP - 507 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/13401 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 67, 2012 N2 - Potatoes are a good source of carotenoids, which are lipophilic compounds synthesized in plastids from isoprenoids. The aim of this research was to determine the content of carotenoids in relationship with the colour of organically and conventionally cultivated potato genotypes before and after period of storage. In cooperation with the State Priekuli Plant Breeding Institute (Latvia), six potato genotypes were studied: 'Agrie dzeltenie', 'Prelma', 'Imanta', 'S-03135-10', 'S-99108-8' and 'S-01063-5'. All the genotypes were cultivated under three different conditions: organically and conventionally (two conditions). The content of carotenoids was determined by using spectrophotometer and the colour – L*a*b* system. The results of current research show that after the period of storage, carotenoid amount has increased and in conventionally cultivated potatoes it varies from 228.514 to 552.434 μg 100 g-1 while in organically cultivated potato genotypes – from 45.485 to 662.699 μg 100 g-1 FW. Colour of potato flesh was changing during storage. ER -