Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Jurnal Agronomi Tanaman Tropika (JUATIKA) ROCE : Jurnal Pertanian Terapan
Ika Rezvani
Politeknik Indonesia Venezuela
Agriculture, Biological Sciences & Forestry Other

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Analysis of Soil Quality Index of mixed garden land use type on dry land in Blang Bintang sub-district, Aceh Besar district Yusran Akbar; Umar H. A; Endiyani Endiyani; Sri Agustina; Irhami Irhami; Ika Rezvani; Irmayanti Irmayanti
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 4 No 1 (2022): Jurnal Agronomi Tanaman Tropika (JUATIKA)
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v4i1.1794

Abstract

This research was conducted by using a descriptive method based on the results of surveys and field observations and laboratory analysis. Field survey activities were carried out to obtain primary data in the form of general biophysical conditions of the area and physical and chemical characteristics of the soil obtained from observations and indicators of soil quality through soil analysis in the laboratory. Soil sampling points were determined using the purposive sampling method, namely points that have been determined in selected dry land areas in Blang Bintang District, Aceh Besar District. Soil sampling for analysis of chemical properties was carried out by drilling. Soil drilling was carried out to determine the thickness of the soil solum. Sampling was focused only on the top soil layer with a thickness of 0 - 20 cm. In mixed garden land use type (LUT) 5 - 6 sample points were taken which were then analyzed in the laboratory. From the data from the soil analysis, the fertility status of each type of land use will be determined. Field observations and sampling were carried out at each observation point (LUT) in the Blang Bintang District, Aceh Besar District.The soil characteristics and a large percentage of sand compared to the percentage of silt and clay. The low content of clay fraction in both lands affected the formation of soil aggregates. The position and composition of organic matter greatly determine the process of forming stability and distribution of aggregates. Sandy soil in mixed garden vegetation is difficult to absorb water and nutrients due to large grains and small surface area per unit weight. The soil which is dominated by the sand fraction is porous with high aeration pores. Smooth aeration properties can increase the oxidationof organic matter.
ANALYSIS OF VITAMIN C CONTENT AND ANTIOXIDANT ACTIVITY OF GREEN COCONUT (Cocos nucifera L) USING THE DPPH METHOD: ANALISIS VITAMIN C DAN AKTIVITAS ANTIOKSIDANT PADA KELAPA HIJAU (Cocos nucifera L) MENGGUNAKAN METODE DPPH Baihaqi; Fatahu; Ika Rezvani; Sri Agustina; Sakir
ROCE : Jurnal Pertanian Terapan Vol. 3 No. 2 (2026): JPT ROCE 6, 2026
Publisher : PT. ROCE WISDOM ACEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71275/roce.v3i2.235

Abstract

Green coconut (Cocos nucifera L.) is one of the tropical horticultural commodities widely consumed by Indonesian people and is empirically believed to have health benefits due to its vitamin C and antioxidant compounds. This study aims to analyze the levels of vitamin C and antioxidant activity in water and green coconut meat using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. Vitamin C levels were determined using the iodimetric titration method, while antioxidant activity was measured based on the percentage inhibition of DPPH radicals at five concentration series (1,000-5,000 ppm) using a UV-Vis spectrophotometer, then expressed as an IC50 value through a linear regression equation. The results showed that the average vitamin C levels in coconut water were 29.35 ± 5.08 mg/100 g and in coconut meat were 28.48 ± 4.93 mg/100 g. The IC50 value of coconut water was 5,824.52 ppm and coconut meat was 5,423.78 ppm, both well above the 200 ppm threshold, so both samples were classified as having very weak antioxidant activity based on the DPPH test. Coconut meat showed a slightly lower IC50 than coconut water, but the difference was not substantial. The low levels of vitamin C in both parts of the green coconut fruit are suspected to be one of the main factors in the weak antioxidant activity detected. This study provides baseline data on the antioxidant potential of fresh green coconut without further extraction treatment, which can be a reference for future research on the processing or fortification of coconut-based food products.
PROXIMATE ANALYSIS AND VITAMIN C CONTENT IN GREEN COCONUT (Cocos Nucifera L): ANALISIS PROKSIMAT DAN KANDUNGAN VITAMIN C PADA KELAPA HIJAU (Cocos Nucifera L) Baihaqi; Fatahu; Ika Rezvani; Sri Agustina
ROCE : Jurnal Pertanian Terapan Vol. 3 No. 2 (2026): JPT ROCE 6, 2026
Publisher : PT. ROCE WISDOM ACEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71275/roce.v3i2.236

Abstract

This study analyzes the proximate composition, vitamin C content, and antioxidant activity of the water and flesh of young green coconuts (Cocos nucifera L.). Coconut water contains 7.19–8.20% carbohydrates, 29.35 mg/100g vitamin C, and 0.068–0.163% protein. The flesh contains 5.56–6.44% fat, higher protein levels, an average moisture content of 87.50%, and 0.88% ash. Antioxidant activity increases linearly in the water and fluctuates in the flesh. The results highlight coconut water's potential as an antioxidant source and the nutritional value of the flesh for food and health applications.  
Co-Authors Baihaqi Endiyani Endiyani Fatahu, Fatahu Irhami Irhami Sakir Sri Agustina Yusran Akbar