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Aziz, Fariz Nurmita
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Effects of Carrageenan and Isolated Soy Protein Addition on the Physicochemical and Sensory Properties of Chicken Sausages Afidah, Ulil; Aziz, Fariz Nurmita; Hasniah, Nurul
Journal of Applied Food Technology Vol 12, No 1 (2025)
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.26987

Abstract

The global demand for healthier meat products has increased due to consumer concerns over synthetic additives and interest in functional ingredients. This study investigated the effects of carrageenan and isolated soy protein (ISP) on the physicochemical and sensory properties of chicken sausages. Sausages were formulated with either 2% or 4% carrageenan or ISP and evaluated for moisture content, water activity (aw), water holding capacity (WHC), pH, color (L*, a*, b*), and sensory attributes (taste, aroma, texture, overall acceptability). Results indicated no significant differences in moisture content, aw, WHC, or color among treatments. However, the addition of 4% carrageenan significantly increased the pH. Sensory evaluation showed that while carrageenan treatments maintained favorable sensory scores, a high concentration of ISP (4%) resulted in a significantly lower texture and acceptability score. These findings suggest that carrageenan is a more suitable natural additive than ISP for improving certain quality characteristics of chicken sausages without compromising consumer preferences.
Enhancing Steak Taste, Juiciness, Tenderness, and Acceptability through Bromelain-Enzyme Marination: A Sensory-Focused Approach Aziz, Fariz Nurmita; Hasniah, Nurul; Afidah, Ulil
Journal of Applied Food Technology Vol 12, No 1 (2025)
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.26992

Abstract

This study aimed to evaluate the effects of bromelain and papain proteolytic enzymes on the physicochemical and sensory properties of beef steak. Treatments included a control (P0, without proteases, papain marination for 20 minutes (P1) and 30 minutes (P2), and bromelain marination for 10 minutes (P3) and 15 minutes (P4). Parameters measured were moisture content, pH, water activity (aw), water holding capacity (WHC), color (L*, a*, b*), and sensory attributes (aroma, taste, aftertaste, juiciness, tenderness, and overall acceptability). The results showed no significant differences (p > 0.05) in moisture, pH, aw, WHC, or color across treatments. However, significant improvements were observed in sensory attributes except for the aroma. Bromelain treatment, particularly at 15 minutes, resulted in higher scores for tenderness, juiciness, and overall acceptability. Its selective proteolytic action on collagen and elastin enhanced meat texture and moisture retention without excessive protein degradation. Conversely, papain treatment led to some off-flavor development and a softer texture due to its broader proteolytic activity. In conclusion, bromelain proved more effective than papain in improving the sensory quality of beef steak. Marination with bromelain for 10–15 minutes is recommended as a natural tenderization method to enhance consumer acceptance and meat quality.
A Bibliometric Review of Tempeh Research: Trends, Collaborations, and Emerging Themes (1928–2025) Hasniah, Nurul; Aziz, Fariz Nurmita; Kamil, Rafli Zulfa; Akter, Tanjina
Journal of Applied Food Technology Vol 12, No 2 (2025)
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.27277

Abstract

Tempeh, a traditional Indonesian fermented soybean product, has garnered increasing global attention due to its rich nutritional profile, health benefits, and suitability as a sustainable alternative protein source. This study presents a bibliometric analysis of tempeh-related scientific publications retrieved from the Scopus database, aiming to map the evolution of research, identify leading contributors, and uncover prevailing and emerging research trends. A total of 897 documents published between 1928 and 2025 were analyzed using VOSviewer to generate visualizations of keyword co-occurrences and bibliographic data. The results show a notable rise in tempeh research after 2010, with significant contributions from Indonesian institutions and increasing global interest. Thematic clusters identified include microbiological fermentation, nutritional and technological applications, animal-based functional food studies, and clinical health research. This study highlights tempeh’s expanding role in functional food science and emphasizes opportunities for interdisciplinary collaboration and further research, particularly in underexplored health and sustainability dimensions.
Fortified Fermentation: Improving Microbial Viability and Texture of Egghurt Using Skim Milk Powder Aziz, Fariz Nurmita; Pascual, Evangeline; Rizqiati, Heni
Journal of Applied Food Technology Vol 12, No 2 (2025)
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.29998

Abstract

This study aimed to evaluate the effect of skim milk powder incorporation on the microbiological, physicochemical, and sensory characteristics of egghurt, a fermented egg-based product. The experiment was conducted using varying skim milk concentrations of 0%, 5%, 10%, 15%, and 20% (w/w). Parameters analyzed included water activity (aw), pH, total lactic acid bacteria (LAB), total microbial count, and sensory attributes. Results showed that increasing skim milk concentration decreased egghurt water activity from 0.954 to 0.934 and slightly increased pH from 5.46 to 5.62, indicating higher total solids and buffering capacity. The total LAB count rose significantly from 5.92 to 7.70 log CFU/mL, while total microbial counts ranged from 8.81 to 9.40 log CFU/mL. Sensory evaluation revealed no significant differences in color, aroma, or flavor across treatments; however, texture improved significantly with skim milk addition, increasing from 2.24 to 3.24 on a 5-point scale. Incorporation of egghurt with up to 20% skim milk powder effectively enhanced its microbial viability, physicochemical stability, and textural quality, while maintaining acceptable overall sensory characteristics. The incorporation of skim milk offers a practical formulation approach to develop stable, nutritious, and consumer-acceptable egg-based fermented products with potential functional food value.
Co-Authors Afidah, Ulil Akter, Tanjina Hasniah, Nurul Heni Rizqiati Kamil, Rafli Zulfa Pascual, Evangeline