Nutritional quality of lettuce and onion as companion plants from organic and conventional production in north Greece

Comparison of organically and conventionally produced Batavia type lettuce stored in modified atmosphere packaging for postharvest quality and nutritional parameters

“…Our results are in agreement with the findings of Conversa et al . on cima di rapa and Kapoulas et al . on onion.…”

“…In this study, the TSS content of organically grown lettuce heads was found to be lower than conventionally grown heads. These results are supported by the findings of Kapoulas et al . on lettuce and onion.…”

“…In this study, the TSS content of organically grown lettuce heads was found to be lower than conventionally grown heads. These results are supported by the findings of Kapoulas et al 8 on lettuce and onion. Contrary to our results, Ucurum 27 reported that the TSS content of organically grown tomatoes was higher than that of conventionally grown tomatoes.…”

“…For example, Letaief et al . on orange and Kapoulas et al . on lettuce and onion have reported that conventionally grown products had higher antioxidant compound levels (phenolic content and flavonoids) than those grown organically.…”

“…However, in some other studies, researchers have found that conventionally grown crops have higher phytochemical compounds than organically grown ones. For example, Letaief et al 7 on orange and Kapoulas et al 8 on lettuce and onion have reported that conventionally grown products had higher antioxidant compound levels (phenolic content and flavonoids) than those grown organically. There are also some studies stating that there were no differences between organically and conventionally grown products in terms of phytochemical contents.…”