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INDONESIA
Caraka Tani: Journal of Sustainable Agriculture
Published by Universitas Sebelas Maret
ISSN : 26139456     EISSN : 25992570     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Caraka Tani: Journal of Sustainable Agriculture publishes original articles, review articles, case studies and short communications on the fundamentals, applications and management of Sustainable Agriculture areas in collaboration with Indonesian Agrotechnology / Agroecotechnology Association (PAGI), Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network), and Indonesian Agricultural Higher Education Communication Forum (FKPTPI). This journal has two issues in a year and it will be published in April and October.
Arjuna Subject : -
Articles 2 Documents
 1 
Search results for , issue " Vol 24, No 1 (2009): March" : 2 Documents clear
KAJIAN KARAKTERISTIK OLEORESIN JAHE BERDASARKAN UKURAN DAN LAMA PERENDAMAN SERBUK JAHE DALAM ETANOL Kawiji, Kawiji; Anam, Choiroel; Manuhara, Godras Jati; Fakhrudin, Muh Ifan
Caraka Tani: Journal of Sustainable Agriculture Vol 24, No 1 (2009): March
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3150.303 KB) | DOI: 10.20961/carakatani.v24i1.14020

Abstract

Ginger (Zingiber officinale rosc.) is one of high-production commodities in Indonesia, particulary in Central Java Province. Nevertheless, in general ginger is usually traded in fresh ginger form or simple processing result, such as dry ginger or ginger powder. Ginger oleoresin is combination of resin and atsiri (volatile) oil derives from ginger powder extraction by using organic solvent. Oleoresin is used as food and beverage flavouring substance having taste and aroma characteristic similar to the original spices. In addition to give ginger hot taste, oleoresin is also hygienic as well as contains natural antioxidant. The research aims to find out whether or not the ginger powder size and submerging duration in ethanol as well as the interaction of them affect the oleoresin characterization produced. The experimental design employed was factorial design with two factors: ginger powder size variations (20 mesh, 30 mesh, 50 mesh) and ginger powder submerging duration variations in ethanol (extraction) (24 hours, 48 hours, 72 hours). The data was obtained from the submerging analysis, density, and solvalibility in alcohol, acid and ester values, as well as phenol content affects the oleoresin characterization produced; the smaller the ginger powder size and the longer the submerging duration of ginger powder in ethanol, the higher are the values of submerging, density, acid value, ester as well as phenol content. The interaction of them only affects the oleoresin density. The range of submerging value obtained is 8-14.5%; density 1.2252-1.2809; solvability in alcohol 1:6-1:10; acid value 0.560-2.248; ester value 5.416-14. 978 as well as phenol content 3-7%.
PENGENDALIAN PENYAKIT AKAR GADA PADA TANAH TERINFEKSI PATOGEN MELALUI PENYIRAMAN DENGAN LARUTAN GARAM DAPUR DAN PENGARUHNYA TERHADAP PERTUMBUHAN CAISIN Widadi, Sri; Fatawi, Zainal Djauhari; Gutomo, Hardjono Sri
Caraka Tani: Journal of Sustainable Agriculture Vol 24, No 1 (2009): March
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2176.671 KB) | DOI: 10.20961/carakatani.v24i1.14010

Abstract

Club root caused by P. brassicae is the most important disease of Brassicaceae. In the fields, the pathogen can totally fail to harvest. The disease is difficult to control, because the pathogen can persist in soil far years although there is no host. Elimination of the pathogen in the infested soil is become an important tactic in control of soil born disease such the disease. The use of natural agents which save on environment is one of the interesting methods to develop. One of them is rock salt (NaCl). An evaluation of the effectiveness of NaCl for elimination of club root pathogen and its impact on growth of Chinese cabbage as indicator plant has been conducted. A mount of 13 factorial treatments consisted of 5 levels of concentration and 5 levels of frequency of dreanching application have been evaluated. The result showed that the soil drenching of NaCl dilution with some concentration and time application were effective to control club root on Chinese cabbage. A concentration of 0,5-1% NaCl could be considerable for control of club root on Chinese cabbage. Soil drenching of NaCl solution on two or one weeks before planting could be considerable in control of club root.

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