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Contact Name
Dr. agr. Wahyudi David
Contact Email
wahyudi.david@bakrie.ac.id
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Journal Mail Official
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Editorial Address
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Location
Kota adm. jakarta selatan,
Dki jakarta
INDONESIA
Asia Pacific Journal of Sustainable Agriculture, Food and Energy
Published by Universitas Bakrie
ISSN : -     EISSN : -     DOI : -
Asia Pacific Journal of Sustainable Agriculture, Food and Energy (APJSAFE), publish two times a year, publish papers in English reporting the results of original research in the following areas: Sustainable Agriculture, Food Technology and Sustainable Nutrition, Community Development and Scientific Communication, and Other related topics deemed relevant by the Editorial Board (Special Issues)
Arjuna Subject : -
Articles 3 Documents
Search results for , issue " Vol 2, No 1 (2014): Agriculture Food and Energy for Future" : 3 Documents clear
Solar Cooling and Dehumidification Systems - a review Nguyen, Bich Huy; Nguyen, Hay
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 1 (2014): Agriculture Food and Energy for Future
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

Recently, cooling system, especially air-conditioning system, can not be absent in many fields such as appliances (homes, schools, shopping malls, factories, and theaters), food, agro-products and pharmaceutical storages, and so forth. Most of the conventional cooling systems driven by electrical power while solar energy, rather than a burning fuel, can provide the heat energy for these refrigeration processes. This paper reviews how, what, and where the solar energy can be applied for cooling systems. The types of sorption processes and the electrical and thermo-mechanical systems using solar energy have been analyzed. Many studies indicated that the absorption system is most suitable for solar cooling systems. Both theoretical and experimental results also showing that solar sorption refrigeration and air-conditioning are reasonable at present and for future applications. The cost of system, the simple and combine-system in designing, maintaining and controlling of system via using network and the simulation for the system are some perspectives need to study to develop the solar cooling systems. Keywords: solar energy, cooling systems, air conditioning, renewable energy
Effect of Potassium Level on Quality traits of Indonesian Potato Tubers Wibowo, Condro; Wijaya, Krissandi; Sumartono, Gregorius Hadi; Pawelzik, Elke
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 1 (2014): Agriculture Food and Energy for Future
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

The rate of K2O can affect yield and process-grade tubers of potato (Solanum tuberosum L.). The Indonesian cultivars Tenggo and Krespo were examined for effects of K2O level on selected quality traits. Both new cultivars are intended for processing purposes. The result showed that dry matter, K, Mg and Mn contents were not affected by K2O supply. Citric acid content of cultivar Tenggo increased up to 2.64 mg 100 g-1 Dry Matter due to application of 100 kg ha-1 K2O , whereas ascorbic and chlorogenic acid contents were not affected by K2O level. Malic and fumaric acid in cultivar Krespo, and tartaric and fumaric acids in cultivar Tenggo increased due to application of 100 kg ha-1 of K2O. Regarding the oxidative potential no differences between the cultivars were found.
Unripe Areca (Areca catechu. L) Nut Syrup as A Functional Drinks Addition with Powdered Cassia Vera Extract Yenrina, Rina; Nazir, Novizar; Lubis, Alfian Syukri
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol 2, No 1 (2014): Agriculture Food and Energy for Future
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

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Abstract

This study aims to determine the effect of addition of powdered Cassia vera exstract on chemical composition and organoleptic value of unripe areca nut syrup. This research used Completely Randomized Design consist of four treatments and three replications. However, chemistry, physics, and microbiology testing take two of the most preferred product and one control products. Observational data were analyzed by using a statistical program 8, followed by Tukey test at 5% level. The treatments were: A (without addition of cassia vera as control), B (addition 2% of cassia vera exstract), C (addition 4% of cassia vera ), and D (addition 6% of cassia vera). The observations were the analysis of raw materials unripe areca nut includes moisture, ash, fat, protein, antioxidants activity, alkaloids measurement, tannins and carbohydrates. Moreover, chemical analysis of areca nut syrup includes moisture content, ash, sugar, antioxidants, and tannins. And viscosity test for physical analysis. For microbiological analysis such as total plate count and organoleptic test includes taste, odor, and color preference had choosen by the preference test methods. The results, indicates that the addition of powdered cassia vera extract into areca nut syrup significantly had different influence on ash content, water content, sugar content, antioxidant level, viscosity, and tannin level. As on total plate count and alkaloids measurement also had a significant effect on areca nut syrup processing. The results of Organoleptic test showed that the product C was the most preferred product by panelists who chose like-really like level at 95%-100%. Product C as the most preferred product, has an average 42,347% of water content, 0,061% ash content, 71,333% sugar, 15,273% antioxidant level, 7,21% tannin content, viscosity 0,933 dPa.S, alkaloids measurement (+), and total plate count 4,0×10².  Key words : syrup, areca nut, cassia vera, tannin, and antioxidant.

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