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AL-ULUM: JURNAL SAINS DAN TEKNOLOGI
Published by Universitas Islam Kalimantan Muhammad Arsyad Al Banjari
ISSN : -     EISSN : 24774731     DOI : 10.31602
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Energy
Al Ulum: Jurnal Sains dan Teknologi = Al Ulum: Journal of Science and Technology (JST) is an international and open access journal with registered number ISSN 2477-4731 (Online). JST is a peer-reviewed journal published three times a year (April, August and December) by UPT Publication and Journal Management, Islamic University of Kalimantan. JST is intended to be the journal for publishing articles reporting the results of science and technology research. The JST invites manuscripts in the various topics of science and technology include natural sciences, engineering, computer science and technology, health and medical sciences, and agriculture.
Arjuna Subject : Umum - Umum
Articles 12 Documents
 1   2 
Search results for , issue "Vol 10, No 1 (2024)" : 12 Documents clear
MULTIVARIATE SINGULAR SPECTRUM ANALYSIS MODEL IN FORECASTING RED CHILI AND CAYENNE PEPPER PRICES Radita Rahma; Rina Filia Sari; Sajaratud Dur
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 10, No 1 (2024)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v10i1.14281

Abstract

North Sumatra is one of the provinces that contributes the most prominent agricultural commodities of red chilies and cayenne peppers in Indonesia. This study aims to determine the outcomes of price forecasts for cayenne and red chilies in the province of North Sumatra. The method used is multivariate singular spectrum analysis. Results were grouped into six groups based on 12 eigenvectors with a forecast length of 9 monthly periods. Further, the level of accuracy was obtained from MAPE for each variable, with the highest MAPE being 30% for the curly red chili, 27.55% for the big red chili, and the lowest at 23.44% for mixed cayenne pepper. So, the price forecast for red chilies and cayenne peppers in North Sumatra Province for October 2023 to June 2024 using the Multivariate Singular Spectrum Analysis model is included in the forecast category with reasonable capabilities.
TOTAL FLAVONOID CONTENT AND ANTIOXIDANT ACTIVITY OF YELLOW PUMPKIN (Cucurbita moschata Duch) FRUIT EXTRACT Yudha Pratama; Risa Supriningrum; Supomo Supomo
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 10, No 1 (2024)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v10i1.14302

Abstract

Pumpkin (Cucurbita moschata Duch) is a food rich in vitamin A, vitamin C, minerals, carbohydrates, and flavonoid compounds. Flavonoids have several pharmacological activities, including as antioxidants to ward off free radicals. This study aims to determine the total flavonoid content and antioxidant activity of pumpkin fruit. The extraction of pumpkin fruit was done by the maceration method in a 70% ethanol solvent. The total flavonoid test used the colorimetric method with a 10% AlCl3 reagent and quercetin as a positive control. Antioxidant activity was tested using the DPPH (1,1-diphenyl-2-picrylhydrazyl) method. The results obtained for the total flavonoid content of the ethanol extract of pumpkin fruit amounted to 1.741 mgQE/g ± 0.2438 and an IC50 value of 379.44 ppm, including the category of weak antioxidant, compared with the positive control.

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