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All Journal Jurnal Teknik Industri Terintegrasi (JUTIN) Makara Journal of Science
Kamila, Muthia
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Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Effect of Mechanical Milling on the Total Phenolic Content and Antioxidant Activity of Garcinia mangostana Pericarp Nugroho, Dwi Wahyu; Daratika, Dyah Ayu; Kamila, Muthia; Togatorop, Lusiana; Rifada, Mohammad Aulia; Widayatno, Wahyu Bambang; Maulana, Syahrizal; Setyawati, Damai Ria; Mardliyati, Etik; Rochman, Nurul Taufiqu
Makara Journal of Science Vol. 24, No. 2
Publisher : UI Scholars Hub

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Abstract

This study aimed to identify the effect of mechanical milling on the total phenolic content and antioxidant activity of mangosteen pericarp. Mangosteen pericarp was milled under different milling times (30, 90, 150, and 210 min). The particle morphology before and after milling was observed by scanning electron microscopy (SEM), and the average particle size was obtained from SEM images and analyzed statistically. The antioxidant activity was measured through the 2,2-diphenyl-1-picrylhydrazyl method. The total phenolic content for the non-milling sample was 14.52 × 104 µg GAE/g sample, and the highest total phenol content was 17.44 × 104 µg GAE/g sample for the sample milled for 210 min. The IC50 value decreased for samples with milling 150 and 210 min, which showed strong antioxidant activity, whereas the value of gallic acid equivalent increased. SEM observations showed the presence of agglomeration in the morphology of mangosteen pericarp samples. The average particle size of the mangosteen pericarp decreased as the milling time increased (up to 4499 nm for samples milled for 210 min). Therefore, mechanical milling had a significant effect on the phenolic content and antioxidant activity, which indicated an increase in the bioavailability of mangosteen pericarp.
Analisis Pengendalian Persediaan Bahan Baku Produksi dengan Metode EOQ (Studi Kasus: Pawon Mas Herman) Kamila, Muthia; Rahmadani, Desvita; Fitri, Nadila Gusrialni; Am, Andri Nofiar
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 4 (2023): Oktober
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i4.21008

Abstract

One important role in business operations is based on inventory, which is the underlying principle of business. Therefore, a business must be able to predict potential problems as well as potential traps in inventory management in order to the ultimate goal, namely to reduce the total cost to be borne by inventory. Pawon mas herman is one of the bakso shops in Pekanbaru that has been established since 1998. Pawon mas herman is experiencing a fairly rapid business expansion, but a lack of management system or methods to buy or collect raw materials, causes this restaurant to suffer from material shortages or even raw materials shortfalls during the hours of operation. To ensure the business continues from the production process and avoid stopping or collapse due to a shortage of raw materials namely meat and chicken, pawon masherman needs to have a proper plan. The Economic Order Quantity (EOQ) method is used to help in solving problems in particular requirements related to the supply of raw materials. The result of this study is that by using the EOQ method, Pawon Mas Herman farm can save shipping costs up to Rs. 4,740,000. Because, based on the calculations completed using the eOQ technique, the owner of the farm must make meat orders every 7 days, weighing at least 7 kg of meat each time ordering. Pawon Mas Herman is advised to use the EOQ method for control of supplies, there is a significant cost difference.
Co-Authors Am, Andri Nofiar Daratika, Dyah Ayu Dwi Wahyu Nugroho Etik Mardliyati, Etik Fitri, Nadila Gusrialni Maulana, Syahrizal Nurul Taufiqu Rochman Rahmadani, Desvita Rifada, Mohammad Aulia SETYAWATI, DAMAI RIA Togatorop, Lusiana Wahyu Bambang Widayatno, Wahyu Bambang