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Journal of Applied Food Technology
Published by Universitas Diponegoro
ISSN : 23559152     EISSN : 26147076     DOI : -
Core Subject : Education,
Other
Journal of Applied Food Technology or JAFT (pISSN 2355-9152 and eISSN 2614-7076) is a peer reviewed journal which is an official worldwide publication of Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University (www.teknologipangan.fpp.undip.ac.id) and in collaboration with Indonesian Food Technologists (www.ift.or.id). The journal publishes two times a year (June and December).
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 10, No 1 (2023)" : 5 Documents clear
Water Content, Total Dissolved Solids and Antioxidant Activity of Robusta Coffee Powder Produced by Fermenting Beans in Whey Kefir Priyo Bintoro; Anggun Miftahurrahmi; Heni Rizqiati
Journal of Applied Food Technology Vol 10, No 1 (2023)
Publisher : Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.16413

Abstract

Coffee is one of the plantation commodities that is usually processed into beverage products. The most widely cultivated coffee in Indonesia is Robusta coffee. However, Robusta coffee has a lower quality compared to other types of coffee. Fermentation of coffee beans during wet processing can improve coffee quality. The purpose of this study was to determine the best fermentation time for robusta coffee beans in whey kefir so that quality robusta coffee powder was obtained from the water content, total dissolved solids (TDS) and antioxidant activity. This study used a completely randomized design (CRD) with different fermentation time treatments. Parametric data were analysed by ANOVA and followed by DMRT test. Antioxidant activity data were analysed descriptively. Longer fermentation times reduced the total dissolved solids (TDS) of the coffee beans. However, prolonged fermentation can also increase the water content and reduce antioxidant activity. The best treatment was found to be a fermentation time of 18 hours, which resulted in a coffee bean with a good balance of TDS (3.25°Brix), water content (4.67%), and antioxidant activity (16.09 ppm).
Determination of The Optimum pH and Enzyme Ratio for Starch Hydrolysis Test and Characterization of Steamed, Baked, and Fried Wheat Doughs Setya Budi Muhammad Abduh; V. Priyo Bintoro; Nurwantoro Nurwantoro; Vitus Dwi Yunianto; Yoyok Budi Pramono
Journal of Applied Food Technology Vol 10, No 1 (2023)
Publisher : Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.18727

Abstract

Digestibility is the most important nutritional functionality of starchy foods. Unfortunately, in Indonesia, this functionality has not been extensively studied due to the relatively challenging methods involving enzymes. This research aims to determine the optimal pH and enzyme ratio of α-amylase (AA) and glucoamylase (GA) for starch hydrolysis tests and apply them to characterize steamed, baked, and fried wheat doughs. For optimization, hydrolysis was carried out at 37 °C with an enzyme-to-substrate ratio (E/S) of 100 mL/g for 120 min. Samples of wheat dough obtained from three major dough producers in Banyumanik, Semarang, Indonesia was then tested for starch hydrolysis, texture, chemical analyses, sensory, and hedonic test. The collected data were analysed using principal component analysis (PCA). Under the determined conditions, the optimal pH and AA/GA ratio were found to be 6.6 and 0.5. Regarding quality of processed doughs, the steamed dough exhibited a cohesive texture, a soft sensory profile with a pleasant aroma, sweet taste, and was most preferred by the panellists. The baked dough was hard in texture, high in ash content, and brown in colour. The fried dough poses high starch hydrolysis, chewy texture, adhesion, solid particles, protein content, and relatively high lipid. The sensory evaluation indicated that the fried dough poses an oily, rancid, foreign aroma, and bitter and salty taste. It can be concluded that at a temperature of 37 °C, an enzyme-to-substrate ratio of 100 mL/g, and a reaction time of 120 min, the optimal starch hydrolysis of processed wheat dough can be achieved at a pH of 6.6 and an AA/GA ratio of 0.5. Furthermore, steaming resulted in a unique property of dough compared to the baked and fried, while the latter two yielded products with similar properties.
Comparing the Quality of West Sumatra’s Rendang: Rendang Darek vs Rendang Pasisia Yuliana Yuliana; Yolanda Intan Sari; Violintikha Harmawan
Journal of Applied Food Technology Vol 10, No 1 (2023)
Publisher : Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.17378

Abstract

The aim of this research is to compare the quality of beef rendang in the Darek and Pasisia regions using a standardized recipe. The recipe was a recipe obtained in the Darek region, called Payakumbuh City, and the Pasisia region, called Pariaman City. This research was quantitative research. Further, the informants of this study were Micro, Small, and Medium Enterprises or MSMEs in the Darek and Pasisia regions. Questionnaires and experiments were used to gain the data. Further, the data were analyzed using organoleptic analysis, which tested the shape qualities, color, aroma, texture, and taste. The scores were in the range of 1–5. Moreover, after determining the total scores resulting from each item score, the Man Whitney U test was conducted. The results showed that there were different qualities of beef rendang in the Darek and Pasisia regions in terms of shape, color, aroma, texture, and taste. As conclusion, there were different qualities of beef rendang in the Darek and Pasisia regions with specific value.
Extending The Shelf Life of Ready-To-Eat (RTE) Meat Product by Using Turmeric and Red Ginger as Film Coating of Active Packaging Adi Sidharta Budi Dharma
Journal of Applied Food Technology Vol 10, No 1 (2023)
Publisher : Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.14149

Abstract

The high demand for ready-to-eat (RTE) meat products is attributed to their convenience, safe, and healthy properties. The high nutritional content presence in the RTE meat product promotes the presence and growth of microbial pathogens such as Listeria monocytogenes, Escherichia coli, and Salmonella spp. It is considered to be the post-process contamination that is responsible for the shortening of a product’s shelf life which leads to spoilage or foodborne diseases. The aim of this systematic review is to develop and summarize the use of red ginger and turmeric bioactive compounds as antimicrobial materials to ensure their quality and extend the shelf-life of RTE beef rendang products. Thus, the current studies of coating technology of bioactive compounds and vacuum-sealed packaging are considered to be combined strategies that develop a more robust active packaging system. In order to gain a better understanding of this research field, a literature search was performed using the electronic databases Oxford Journals, Google Scholar, SAGE Journals, ScienceDirect, and Taylor & Francis which describes 26 primary studies. The findings state that the enhanced active packaging system by using bioactive compounds was associated with a significant prolongation of various RTE meat product’s shelf-life of up to 30 days of storage at room temperature. Moreover, the vacuum-sealed packaging in a retort pouch is also considered to improve the food safety environment against microbial contamination
The Preparation of Virgin Coconut Oil Using Acid from Passion Fruit Extract at Different Temperature and Incubation Time Inggrit Pangestu Ayuningtyas; Wisnu Broto
Journal of Applied Food Technology Vol 10, No 1 (2023)
Publisher : Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.14907

Abstract

Virgin coconut oil (VCO) is a liquid coconut product with a translucent color, a characteristic coconut aroma, and long shelf life. VCO can be made in various ways, including enzymatic, centrifugation, acidification, etc. In this study, the acidification method was used to manufacture VCO whereby the acid used is sourced from passion fruit. This study aims to determine the effect of passion fruit juice addition on the preparation virgin coconut oil. Several variables were employed in the current study, including passion fruit volume of 5 and 8 ml, incubation time of 12 hours and 24 hours, and incubation temperature of 36 and 48 °C in a Factorial Design. The amount of coconut was 660 grams and 660 ml distilled water. The results showed that the production temperature greatly influenced the free fatty acids produced. The best treatment was obtained on VCO with 8 ml passion fruit addition, 12 hours of formation time and 48°C incubation temperature, with 0.12% free fatty acids.

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