Factors Affecting Biomass Growth and Production of Essential Oil from Leaf and Flower of Salvia leucantha Cav.
Abstract: This study was conducted to investigate factors affecting biomass growth and production of essential oils from leaf and flower of Salvia leucanthaCav. (Mexican Sage). The light intensity (37-151μmol.m-2s-1), water input (76-152 ml/day), and concentration of salicylic acid (0-0.5 mM) were varied and the biomass growth was recorded. The essential oils contained in the leaf and flower were extracted using a steam-distillation technique. The yield of essential oil both from flower and leaf varied from 1-2.76 % and 0.36-0.8 % on a dry weight basis, respectively. The productivity of essential oil was estimated in the range of 0.57-3.96 kg/ha.year and 2.26-4.36 kg/ha.year for both leaf and flower. The highest estimated productivity of essential oil (4.36 kg/ha.yr) was obtained when Salvia leucanthawas cultivated without any shade net (receiving a light intensity of 301μmol.m-2s-1) with a water input of 152 ml/day (100 % water field capacity) and sprayed with 0.25 mM salicylic acid on the surface of the flower once a week. The essential oil from both leaf and flower contain aristolane (7.31-16.33 %) which may have a potential application as anti-malaria substance.
Keywords: Salvia leucantha Cav; essential oils; light intensity; salicylic acid; aristolane.
Factors affecting the bioconversion of Philippine tung seed by black soldier fly larvae for the production of protein and oil-rich biomass
Muhammad Yusuf Abduh, Mochamad Hirza Nadia, Syaripudin, Robert Manurung, Ramadhani Eka Putra
Abstract: A systematic study on the use of Philippine tung (Reutealis trisperma) seed as a substrate for the cultivation of black soldier fly larvae (Hermetia illucens) was performed. The characteristics of Reutealis trisperma seed from two different locations: West Java and Papua, were determined. The seed has a relatively high oil (37.6–39.2%, dry weight) and protein content (14.9–28.2%, dry weight). The effect of cake content in the substrate (0–20%, wet weight), moisture content in the substrate (50–70%, wet weight), feeding rate (50–100 mg/larva/d), lighting condition (dark-light) and substrate depth in a rearing container (4–10 cm) was performed. An optimum prepupal biomass productivity of 123.4 g/m2/d was obtained (20%, wet weight of cake content in the substrate, 60%, wet weight of moisture content in the substrate, 100 mg/larva/d, dark, 6 cm substrate depth). The protein and oil content of the biomass were also determined to evaluate the effect of Reutealis trisperma seed as a substrate for the cultivation of black soldier fly larvae to produce protein and oil-rich biomass. The oil content in the biomass was also extracted and the fatty acid composition was identified. The prepupal biomass has a relatively high amount of protein (45%, dry weight) and oil content (26.6%, dry weight) and is suitable for cattle feed application.
Keywords:Reutealis trisperma, Hermetia illucens, Biomass productivity, Protein, Cattle feed
Road to Cibeusi: Kegiatan diseminasi mengenai pasca panen kopi, lebah tanpa sengat dan lalat tentara hitam kepada masyarakat di Kampung Cibeusi
Sosialisasi pemanfaatan kemiri sunan menggunakan konsep biorefinery di desa Jatigede, Sumedang yang mendatangkan professor dari negeri kincir angin