MINYAK ATSIRI DARI Toona sinensis DAN UJI AKTIVITAS INSEKTISIDA

Abstract

Volatile components from leafs of Toona sinensis (Meliaceae) were isolated by distillation watervapour method and analyzed using GC/MS. Forty-eight component were identified, and eight major components are Germacrene-D, Germacrene-B, α-Terpinene, α-Humulene, β-Caryophyllene, α-Elemene, Bicyclogermacrene and α-copaene. Insect activity of the essential oil against Crosidolomia pavonana were tested. The activity of the essential oil with concentration 25% (mortality 73.3%), concentration 50% (mortality 83.3%) and concentration 75% (mortality 90%).

ISOLASI DAN ELUSIDASI STRUKTUR TRITERPENOID KULIT BATANG SURIAN Toona sinensis DAN UJI TERHADAP HAMA Crosidolomia pavonana

“…Daun surian juga digunakan sebagai pengusir serangga terutama untuk membunuh kutu busuk yang hidup dicelah-celah papan, pengusir hama tanaman padi dan digunakan juga sebagai penyedap rendang belut [2][3][4][5] . Daun tumbuhan ini dilaporkan mengandung 48 senyawa minyak atsiri dengan 8 komponen utama yaitu, germakren-D, germakren-B, α-terpinen, α-humulen, β-kariofilen, α-elemen, bisiklogermakren dan α-kopaen [6] .…”

“…Penelitian lebih lanjut terhadap kulit batang tumbuhan ini diperoleh dua senyawa flavonoid yakni 3, 5, 7, 3', 4'-pentahidroksi flavanol (katekin) dan senyawa 3, 5, 7, 2', 4'-pentahidroksi flavanol (isomer katekin) [7] . Ekstrak etanol daun surian dilaporkan juga mengandung steroid yakni surenon dan surenin dan sendrelon [8][9][10][11][12][13][14] dan karotenoid yang terdiri dari β-karoten, zeasantin dan laktukasantin.…”

CHEMICAL COMPOSITION AND ANTIBACTERIAL ACTIVITY OF THE ESSENTIAL OIL OF THE Toona sureni (Blume) Merr

“…No diterpene was found so far from the essential oil composition of this plant. Some major components of the oil (β-caryophyllene bi-cyclogermacrene, germacrene-D) also were found on the leaves of Toona ciliata and Toona sinensis as major components [17,18] . 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 C 1 2 3 4 5 6 Monoterpene hydrocarbon α-terpinene Antibacterial Activity of the Essential Oil Table 2, all three bacteria show an antibacterial activity to the oil which cantains α-terpinene (9.58%), and β-caryophillene (2.88%), and this is in agreement with literature reference [3] .…”

“…The oil contains germacrene-D, germacrene-B, α-terpinene, α-humulene, β-caryophyllene, α-elemene, bicyclogermacrene and α-copaene as the major compounds [18] .…”

Production of reserpine of rauwolfia serpentina [L] kurz ex benth through in vitro culture enriched with plant growth regulators of NAA and kinetin

“…Research using a root extract of R. serpentine showed a good effect in dropping in blood pressure [4] Studies to obtain reserpine out of the plant as a natural insecticide have been carried out by many researchers. Natural insecticide is considered safer for the environment because it is easily degradable in soil as well as relatively less toxic to the parasitoid [5]. Reserpine of R. serpentine can inhibit the feeding process of plant pests [6].…”