Pengaruh Waktu Panen Terhadap Mutu Dan Hasil Minyak Papermint (Mentha Piperita L)

Abstract

Thirteen harvests were carried out from January 3 to March 28, 1979. and followed by gas liquid chromatographic analysis of the oil. The best yield of high quality was obtained when the crop was harvested in the period between the last week of January and the first week of February, and plants were 10 -20% in flower. At that time, oil yield and oil percentage were 113.7 kg/ha and 1.17% respectively; with the principal consitutents menthol 43.1 %, menthone 28%, menthofuran 3.8%, menthylacetate 6.6% arid cineole 4.1 percent. When the menthol content exceeded 43.1 %, the oil yield declined steadily due to leaf senescence and shattering.