Effects of Picking Methods and Cultivation Areas on Biochemical Composition of Leaves from Longleaf Morphotype of Lippia multiflora Grown in C?te d’Ivoire

摘要

The effect of three cultivation areas and two picking methods were evaluated on the biochemical composition of longleaf morphotype of Lippia multiflora (llmLM ), to determine how areas and picking method provide leaves with good quality for the production of tea. Results revealed significant variability of leaves composition according to areas and picking method. Leaves from Korhogo were rich in most essential compound such as fat (8.36 mg/100g dw), total phenolic compounds (TPC) (2233.33 mg/100g dw), caffeine (20.97 mg/100g dw), catechin (59.51 mg/100g dw), tannins (14.33 mg/100g dw) and quercetin (1.06 mg/100 g dw), than those from Béoumi and Bondoukou. Fine picking (LsFP) which consist in removing the bud and the two leaves below, provided the highest amount of the majority of compound than leaf samples of coarse picking (LsCP) that concerned picking from buds to fourth leaves below. Ca (7301-10833 ppm), K (1557-7950 ppm), Mg (3060-5449 ppm), Na (1047-1319 ppm) were the most abundant mineral in llmLM leaves. However, result showed that leaves mineral content depend to the cultivation zone. This study revealed that Korhogo is the best area for growing llmLM . Furthermore, fine picking method is the best way to collect the leaves for a good quality tea.