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All Journal Jurnal Ilmu Pangan dan Hasil Pertanian JMM (Jurnal Masyarakat Mandiri) Berdikari: Jurnal Pengabdian Masyarakat Indonesia Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) International Journal of Marine Engineering Innovation and Research Jurnal Abdi Masyarakat Indonesia Journal Serambi Engineering (JSE) SWAGATI: Journal of Community Service JURNAL REKAYASA KIMIA & LINGKUNGAN
Rizka Ayu Yuniar
Institut Teknologi Kalimantan
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Optimization of polyphenolic compound extraction as natural antioxidants from pineapple peel waste (Ananas comosus (L.) Merr.) using ultrasonic-cellulase extraction (UCE) method Kumalaningrum, Amalia Nur; Yosep, Anestasya; Yuniar, Rizka Ayu; Simamora, Gevbry Ranti Ramadhani; Avanza, Mona Rida
Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Vol 8, No 4 (2025)
Publisher : Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.afssaae.2025.008.04.5

Abstract

This study aimed to optimize the ultrasonic–cellulase extraction (UCE) method for recovering polyphenolic compounds with high antioxidant activity from pineapple peel waste. Pineapple peel is an abundant agro-industrial byproduct containing valuable phenolic compounds with potential applications in functional foods. The extraction process was optimized by varying several parameters, including the solvent-to-sample ratio (10–50 mL/g), enzyme concentration (5–25%), pH (3–7), temperature (30°C–70°C), ultrasonic amplitude (30–70%), and extraction time (30–150 min). The optimal conditions were achieved at a solvent-to-sample ratio of 50 mL/g, enzyme concentration of 15%, pH of 6, temperature of 50°C, ultrasonic amplitude of 70%, and extraction time of 120 min, yielding the highest total phenolic content of 37.80 ± 4.21 mg GAE/g. Comparative analysis showed that the UCE method produced higher polyphenolic content (28.04 ± 1.08 mg GAE/g) and stronger antioxidant activity (IC₅₀ = 9.27 µg/mL) than enzyme-assisted extraction (EAE) or ultrasonic-assisted extraction (UAE) alone. These findings confirm the synergistic effect of ultrasonic cavitation and enzymatic hydrolysis, which enhances the release of bioactive compounds. This study highlights UCE as an effective, green, and energy-efficient technology for transforming pineapple peel waste into natural antioxidants, contributing to sustainable food processing and environmental conservation.
Transforming Tofu Waste into a Growth Medium: Boosting Biomass and Proximate Content of Microalgae Nita Ariestiana Putri; Resti Nurmala Dewi; Rizka Ayu Yuniar; Ranti Amanda Mauliasantri
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 4 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.4839

Abstract

This study explores the potential of tofu waste as a cost-effective alternative growth medium for cultivating Spirulina sp. and Nannochloropsis oculata, addressing the high costs of traditional nutrient media that limit large-scale applications. Despite the nutrient richness of tofu waste, its use as a sustainable growth substrate remains underexplored. This research aims to fill this gap by evaluating the growth performance and nutritional suitability of these microalgae in tofu-based media compared to standard controls. The cultivation process was conducted in a closed photobioreactor system, with harvesting methods including flocculation, centrifugation, and filtration. Results showed that tofu waste media supported biomass production comparable to standard cultivation media, with the highest biomass concentrations recorded at the 20% tofu waste treatment, yielding 0.23 ± 0.05 g L-1 for Spirulina sp. and 0.53 ± 0.2 g L-1 for Nannochloropsis oculata. At this concentration, the final COD levels were 840.84 mg L-1and 825.90 mg L-1, respectively. The lipid and protein contents were 2.44% and 1.71% for Spirulina sp., and 1.21% and 1.50% for Nannochloropsis oculata, respectively. These findings demonstrate that tofu waste can serve as an effective and low-cost growth substrate for Spirulina sp. and Nannochloropsis oculata, promoting circular economy principles within many sectors such as energy, food, and agriculture. This study underscores the potential of waste utilization to enhance the sustainability and economic viability of microalgae cultivation.
Innovation in Membrane-Based Batik Liquid Processing at Sekar Buen Batik Small and Medium Enterprises Moch Purwanto; Rizka Ayu Yuniar; Rizka Lestari; Asful Hariyadi; Jefri Pandu Hidayat; Intan Dwi Wahyu Setyo Rini; Asri Prasaningtyas; Didik Kiswoyo
SWAGATI : Journal of Community Service Vol. 3 No. 2 (2025): July
Publisher : Universitas AMIKOM Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24076/swagati.2025v3i2.1994

Abstract

The process of processing batik liquid waste using membrane technology has been implemented to overcome the problem of batik waste in the Sekar Buen Batik IKM Area through a community service program. The method used is the batik liquid waste filtration technique using a membrane. This community service activity is an effort to help strengthen the human resources of the batik industry community in the liquid waste processing process at the Sekar Buen Batik IKM located in North Penajam Paser. The activity has been carried out in several stages, including a preliminary survey, a discussion forum on batik waste problems with a partner team, making a design for a waste processing system based on membrane technology and working practices for the tool. This program can help partners in processing batik wastewater so that it can reduce its negative impact on the environment. The results of the program show that partners have an understanding of the technique of processing batik liquid waste based on membrane technology. Thus, industrial activities at the Sekar Buen Batik IKM can support the green industry area and be more environmentally friendly.
Co-Authors Andini Angelina Putri Arini Anestesia Purba Asri Prasaningtyas Avanza, Mona Rida Dewi, Resti Nurmala Didik Kiswoyo Dwi Eno Indriyani Dwi Rosa Maharani Erianto, Ricky Fachry Abda El Rahman Gevbry Ranti Ramadhani Simamora Hafizi, Muhammad Ridho Hariyadi, Asful Hijriah Hijriah Hilwa Dwi Putri Nabiha Intan Dwi Wahyu Setyo Rini Jefri Pandu Hidayat Jeni Rahmawati Saputri Kumalaningrum, Amalia Nur Lestari, Rizka Lusi Ernawati Ma'arif, Luluk Majidah Malcheli, Etni Jechonia Mauliasantri, Ranti Amanda Mochammad Purwanto Nita Ariestiana Putri Prabowo, I Putu Deny Arthawan Sugih Purwati, Esty Pusfitasari, Memik Dian Putri Gesan Prabawa Anwar Putri, Nita Ariestiana Putri, Nita Ariestiana Ranti Amanda Mauliasantri Resti Nurmala Dewi Reza Khoirunnisa Risty Jayanti Yuniar Rizka Lestari Rizka Lestari Saleha, Shela Samudera, Borneo Bayu Silmina, Silmina Syifa Allysa Yosep, Anestasya