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All Journal Jurnal Katalisator JOURNAL OF COMMUNITY SERVICE AND APPLICATION SCIENCE (JCSAS)
Zufiayu Sapiun
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Economics, Econometrics & Finance

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ANTIOXIDANT ACTIVITY OF SOURSOP (ANNONA MURICATA L.) LEAF JELLY CONFECTIONS FORMULATED WITH MULTIPLE GEL MATRICES Jumalia Aswar; Dewi Yuliana; Nasrul Haq; Zufiayu Sapiun; Abdul Rasyid, Faradiba
JURNAL KATALISATOR Vol. 10 No. 2 (2025): Jurnal Katalisator, Volume 10 No 2 Oktober 2025
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62769/katalisator.v10i2.3463

Abstract

Jelly confections represent promising nutraceutical products by incorporating bioactive compounds with health-promoting properties. Soursop leaves (Annona muricata L.) are recognized as a potential source of antioxidant and antibacterial agents, yet their application in functional foods remains limited. This study evaluated the antioxidant activity of soursop leaf jelly confections prepared with different gel matrix combinations. Formulation optimization was carried out using three gel matrices, namely carrageenan: agar (9:6), carrageenan: konjac (5:1), and konjac: agar (7:3). Antioxidant activity was assessed by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay using a microplate reader spectrophotometer. The results demonstrated IC₅₀ values of 28.95 µg/mL for carrageenan: agar, 8.82 µg/mL for carrageenan: konjac, and 30.33 µg/mL for konjac: agar formulations. Among these, the carrageenan: konjac (5:1) formulation exhibited the most potent antioxidant activity, indicating its potential for developing functional jelly-based nutraceuticals.
Transfer of Appropriate Technology from Malaysian Cooperatives to Indonesia: A Perspective of Mechanical Engineering in Service Indrayani, Tri Irfa; Salfadri Salfadri; Yohanis; Zufiayu Sapiun
Journal of Community Service and Application of Science Vol. 4 No. 2 (2025): COMMUNITY SERVICE AND APPLICATION SCIENCE (JCSAS) (On Process)
Publisher : KPN Kopertis X

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62769/ezwdgd74

Abstract

International Community Service (PKM) has carried out activities in cross-border collaboration, especially between cooperatives in Malaysia and Indonesia. Mock study activities and field visits to leading cooperatives such as ANGKASA Malaysia which stands for ANGKASA is (Angkatan Koperasi Kebangsaan Malaysia Berhad), This cooperative is the Malaysian national peak cooperative that oversees all types of cooperatives, functioning as a representative body of the Malaysian cooperative movement. Known for its very large membership scale (12 million+), focusing on the socioeconomic well-being of members, facilitating payroll deduction loans. and the service team digitally transformed with an updated credit and service ecosystem to face the modern era, becoming an example of a large cooperative that is actively developing the potential of cooperatives in Malaysia. The adoption of appropriate technology plays a significant role in the efficiency and productivity of cooperative business units. Through a mechanical engineering perspective, this team examines the potential for technology transfer that can be adapted by higher education cooperatives in Indonesia, including agricultural product processing systems, mechanization of production businesses, and automation of cooperative data management. The results of the study show that the simple but effective application of engineering techniques, such as the use of semi-automatic packaging machines and digital inventory systems, is able to increase the efficiency of cooperative work by up to 30%. These findings provide important recommendations for cross-border technology transfer strategies within the framework of cooperative-based economic strengthening. This article contributes to the development of transnational cooperative partnership models and the relevance of engineering in community economic empowerment through cooperatives.
Co-Authors Abdul Rasyid, Faradiba Dewi Yuliana indrayani, tri irfa Jumalia Aswar Nasrul haq Salfadri Salfadri Yohanis