Sutjipto A Hadikusumo
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada

Published : 4 Documents
Articles

Found 4 Documents
Search

Pengaruh Ekstrak Tembakau terhadap Serangan Rayap Kayu Kering Cryptotermes cynocephalus Light pada Bambu Apus (Gigantochloa apus Kurz) Hadikusumo, Sutjipto A
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Jurnal Ilmu Kehutanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.286 KB)

Abstract

Bamboo is one of community forest products and people use it for many purposes. Due to insect attack such as termite, the life time of bamboo product is short. To avoid chemical pollution in bamboo preservation process, tobacco extract was used.Tobacco was extracted in water, in the amounts of 100, 150 and 200 g in 1 l of water, at  temperature of 70-80°C for 3 hours. Bamboo trees were cut, the bottom parts were soaked in tobacco extract solution for 1, 3 and 5 days. Samples were cut into 5 cm x 3 cm x bamboo thickness at the bottom, middle and upper parts of the bamboo tree. After being air dried, each sample was exposed to 50 dry wood termites in a small glass tube for two months.The results showed that bamboo preservation by diffusion with high concentration of tobacco extract (200 g tobacco extracted in 1 l of water) resulted in 61% termite mortality. Keywords: preservation, bamboo, diffusion, tobacco, dry wood termite
Uji Ekstrak Etanol Kumis Kucing (Orthosiphon sp.) sebagai Pengawet Alami Kayu Azis, Abdul; Prayitno, T.A.; Hadikusumo, Sutjipto A; Santoso, Mahdi
Jurnal Ilmu Kehutanan Vol 7, No 1 (2013)
Publisher : Jurnal Ilmu Kehutanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.698 KB)

Abstract

The utilization of plants as a natural preservative agent of wood has not much been explored although the amount and kind of plants are relatively abundant. This study aims to determine the effectiveness of the extract of kumis kucing (Orthosiphon sp.) plant at the extract concentration to solvent of 1:12 , 1:8 and 1:4 against the dry wood termites (Cryptotermes sp.). The tested parameters were termite mortality, mass loss, and degree of damage of the test samples (filter paper). Research was carried out by impregnating the ethanol extract of the leaves and twigs mixtures in the filter papers and then the papers were fed to dry-wood termites. Data were analyzed by analysis of variance. The analysis of variance showed that treatment concentration has a highly significant effect to the mortality levels of the termites. Further, at the concentration of 1:4, the extract exhibited the highest efficacy (mortality of 65 % and mass loss of 2.71 %) and the lowest levels were shown by the controls or 0 (zero) concentration (mortality of 1 % and mass loss of 37.86 %). The concentration of the extract also affected the degree of damage. The higher the concentration, the lower the degree of damage that occurred. The degree of damage due to termite attacks at the treatment from the lowest (1:12) to the highest (1:4) concentration could be classified as heavy to light. Thus, ethanol extract of the kumis kucing at concentration of 1:4 is potent for wood preservatives because it could reduce the degradation of cellulosic materials due to dry wood termites. Intisari Pemanfaatan tumbuhan belum banyak dilakukan sebagai bahan alami pengawet kayu padahal jumlah dan jenisnya cukup melimpah. Penelitian ini bertujuan untuk mengetahui efektifitas ekstrak etanol tumbuhan kumis kucing (Orthosiphon sp.) pada konsentrasi ekstrak terhadap pelarut 1:12, 1:8 dan 1:4 terhadap mortalitas rayap kayu kering (Cryptotermes sp.), pengurangan berat dan derajat kerusakan contoh uji (kertas saring) dalam rangka aplikasinya sebagai pengawet alami kayu. Penelitian dilakukan dengan mengimpregnasi ekstrak etanol campuran daun dan ranting kumis kucing pada kertas saring lalu diumpankan pada rayap kayu kering. Data penelitian dianalisis dengan analisis varian. Analisis varian menunjukkan bahwa perlakuan konsentrasi berpengaruh sangat nyata terhadap mortalitas rayap kayu kering. Hasil penelitian menunjukkan bahwa ekstrak etanol kumis kucing pada konsentrasi 1:4 menunjukkan efektifitas paling tinggi (mortalitas rayap kayu kering sebesar 65 % dan pengurangan berat contoh uji 2,71 %) dan terendah ditunjukkan oleh kontrol atau konsentrasi 0 (mortalitas rayap sebesar 1 % dan pengurangan berat 37,86 %). Konsentrasi ekstrak juga mempengaruhi besar derajat kerusakan. Semakin tinggi konsentrasi maka semakin rendah derajat kerusakan yang terjadi. Derajat kerusakan pada perlakuan dengan konsentrasi terendah (1:12) hingga tertinggi (1:4), serangan rayapnya dapat digolongkan sebagai berat hingga ringan. Ekstrak etanol tumbuhan kumis kucing konsentrasi 1:4 berpotensi sebagai bahan alami pengawet kayu karena dapat mengurangi degradasi bahan selulosa oleh rayap kayu kering.Katakunci: Orthosiphon sp., Cryptotermes sp., ekstrak daun, anti rayap, pengawet alami.
Pengaruh Ekstrak Tembakau terhadap Serangan Rayap Kayu Kering Cryptotermes cynocephalus Light pada Bambu Apus (Gigantochloa apus Kurz) Hadikusumo, Sutjipto A
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.286 KB) | DOI: 10.22146/jik.1555

Abstract

Effect of Tobacco Extracts on   Apus Bamboo (Gigantochloa apus Kurz)  resistance  against  Drywood Termite Cryptotermes cynocephalus Light (Gigantochloa apus Kurz) AttacksBamboo is one of community forest products and people use it for many purposes. Due to insect attack such as termite, the life time of bamboo product is short. To avoid chemical pollution in bamboo preservation process, tobacco extract was used.Tobacco was extracted in water, in the amounts of 100, 150 and 200 g in 1 l of water, at  temperature of 70-80°C for 3 hours. Bamboo trees were cut, the bottom parts were soaked in tobacco extract solution for 1, 3 and 5 days. Samples were cut into 5 cm x 3 cm x bamboo thickness at the bottom, middle and upper parts of the bamboo tree. After being air dried, each sample was exposed to 50 dry wood termites in a small glass tube for two months.The results showed that bamboo preservation by diffusion with high concentration of tobacco extract (200 g tobacco extracted in 1 l of water) resulted in 61% termite mortality. 
Uji Ekstrak Etanol Kumis Kucing (Orthosiphon sp.) sebagai Pengawet Alami Kayu Azis, Abdul; Prayitno, T.A.; Hadikusumo, Sutjipto A; Santoso, Mahdi
Jurnal Ilmu Kehutanan Vol 7, No 1 (2013)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.698 KB) | DOI: 10.22146/jik.6137

Abstract

Pemanfaatan tumbuhan belum banyak dilakukan sebagai bahan alami pengawet kayu padahal jumlah dan jenisnya cukup melimpah. Penelitian ini bertujuan untuk mengetahui efektifitas ekstrak etanol tumbuhan kumis kucing (Orthosiphon sp.) pada konsentrasi ekstrak terhadap pelarut 1:12, 1:8 dan 1:4 terhadap mortalitas rayap kayu kering (Cryptotermes sp.), pengurangan berat dan derajat kerusakan contoh uji (kertas saring) dalam rangka aplikasinya sebagai pengawet alami kayu. Penelitian dilakukan dengan mengimpregnasi ekstrak etanol campuran daun dan ranting kumis kucing pada kertas saring lalu diumpankan pada rayap kayu kering. Data penelitian dianalisis dengan analisis varian. Analisis varian menunjukkan bahwa perlakuan konsentrasi berpengaruh sangat nyata terhadap mortalitas rayap kayu kering. Hasil penelitian menunjukkan bahwa ekstrak etanol kumis kucing pada konsentrasi 1:4 menunjukkan efektifitas paling tinggi (mortalitas rayap kayu kering sebesar 65 % dan pengurangan berat contoh uji 2,71 %) dan terendah ditunjukkan oleh kontrol atau konsentrasi 0 (mortalitas rayap sebesar 1 % dan pengurangan berat 37,86 %). Konsentrasi ekstrak juga mempengaruhi besar derajat kerusakan. Semakin tinggi konsentrasi maka semakin rendah derajat kerusakan yang terjadi. Derajat kerusakan pada perlakuan dengan konsentrasi terendah (1:12) hingga tertinggi (1:4), serangan rayapnya dapat digolongkan sebagai berat hingga ringan. Ekstrak etanol tumbuhan kumis kucing konsentrasi 1:4 berpotensi sebagai bahan alami pengawet kayu karena dapat mengurangi degradasi bahan selulosa oleh rayap kayu kering.Katakunci: Orthosiphon sp., Cryptotermes sp., ekstrak daun, anti rayap, pengawet alami. Ethanol Extracts Test of Kumis Kucing (Orthosiphon sp.) Leaves as Natural Preservative of WoodAbstractThe utilization of plants as a natural preservative agent of wood has not much been explored although the amount and kind of plants are relatively abundant. This study aims to determine the effectiveness of the extract of kumis kucing (Orthosiphon sp.) plant at the extract concentration to solvent of 1:12 , 1:8 and 1:4 against the dry wood termites (Cryptotermes sp.). The tested parameters were termite mortality, mass loss, and degree of damage of the test samples (filter paper). Research was carried out by impregnating the ethanol extract of the leaves and twigs mixtures in the filter papers and then the papers were fed to dry-wood termites. Data were analyzed by analysis of variance. The analysis of variance showed that treatment concentration has a highly significant effect to the mortality levels of the termites. Further, at the concentration of 1:4, the extract exhibited the highest efficacy (mortality of 65 % and mass loss of 2.71 %) and the lowest levels were shown by the controls or 0 (zero) concentration (mortality of 1 % and mass loss of 37.86 %). The concentration of the extract also affected the degree of damage. The higher the concentration, the lower the degree of damage that occurred. The degree of damage due to termite attacks at the treatment from the lowest (1:12) to the highest (1:4) concentration could be classified as heavy to light. Thus, ethanol extract of the kumis kucing at concentration of 1:4 is potent for wood preservatives because it could reduce the degradation of cellulosic materials due to dry wood termites.