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All Journal Jurnal Sains dan Teknologi Pangan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jambura FIsh Processing Journal
Simamora, Gevbry Ranti Ramadhani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering

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PENGARUH KONSENTRASI PELARUT ETANOL PADA EKSTRAKSI SENYAWA ANTIOKSIDAN KULIT NANAS (Ananas comosus L.) DENGAN METODE SOKLETASI Kumalaningrum, Amalia Nur; Munfarida, Siti; Simamora, Gevbry Ranti Ramadhani; Herlin, Farrah Widy; Bachtiar, Nova
Jurnal Sains dan Teknologi Pangan Vol 8, No 6 (2023):
Publisher : JURUSAN ILMU DAN TEKNOLOGI PANGAN, UNIVERSITAS HALU OLEO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jstp.v8i6.45283

Abstract

ABSTRAK Tujuan penelitian ini untuk mengetahui pengaruh konsentrasi pelarut etanol pada ekstraksi antioksidan dari kulit nanas. Kulit nanas didapatkan dari wilayah Balikpapan Utara. Kulit nanas dikeringkan pada suhu 60°C dan berat sampel berkurang 78,70%. Sampel kering dihaluskan hingga berukuran 100 mesh. Ekstraksi dilakukan dengan metode Soxhlet selama 4 jam dengan menggunakan variasi pelarut etanol dengan konsentrasi 25%, 40%, 55%, 70% dan 85%. Larutan hasil ekstraksi dievaporasi 50 – 60°C hingga membentuk ekstraks kental etanol yang berwarna kuning kecokelatan dengan bau khas nanas. Hasil perhitungan rendeman menunjukkan bahwa tidak ada perbedaan signifikan ekstraksi dengan pelarut etanol dengan konsentrasi 25 – 70%, yaitu kurang 10%. Rendeman tertinggi diperoleh dari ekstraksi dengan 85% pelarut etanol, yaitu sekitar 20%. Analisis fitokimia dilakukan dengan uji kualitatif beberapa senyawa antioksidan, yaitu flavonoid, alkaloid, polifenol, terpenoid dan steroid. Ekstrak etanol kulit nanas mengandung flavonoid dan polifenol pada setiap variasi konsentrasi pelarut etanol, namun negatif terhadap alkaloid dan steroid. Hanya ekstrak etanol dari 55 – 85% pelarut etanol yang memberikan hasil positif pada terpenoid. Ekstrak etanol dari 85% etanol memiliki intensitas perubahan warna yang paling tinggi. Sehingga, ekstraksi kulit nanas menggunakan metode sokletasi memberikan hasil yang optimal dengan menggunakan pelarut 85% etanol.
Pemanfaatan Hasil Samping Tepung Tulang Ikan Bandeng (Chanos chanos) Menjadi Produk Added Value Berupa Cookies Simamora, Gevbry Ranti Ramadhani; Hidayat, Jefri Pandu
Jambura Fish Processing Journal Vol 6, No 2 (2024): VOLUME 6 NOMOR 2, JULY 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jfpj.v6i2.23837

Abstract

Fish bone can be utilized as an additional ingredient in food processing. Cookies are one of the processed dry cakes that utilize the nutritional content found in the by-products of milkfish bones, thus becoming an alternative snack for osteoporosis patients. The common process of milkfish bone processing is grinding, which can be added to Cookies products. Cookies are sweet dry cakes made from wheat flour. Cookies, as dry food products, have a relatively long shelf life, thus maintaining product durability (approximately up to one year) and are easy to carry due to their small volume and weight resulting from the drying process. The aim of this research is to determine the effect of milkfish bone processing on the flour content and Cookies on proximate content, protein content, moisture content, ash content, and calcium and phosphorus content in milkfish bone flour cookies. The research method was conducted using an experimental method with two treatments, namely chocochip cookies and savory cookies, which were analyzed using one-way Anova in the XLStat software. The results showed that fortified milkfish bone chocochip cookies had nutritional content such as moisture content (0.72%); ash (4.18%); protein (7.26%); fat (27.33%); carbohydrates (60.51%); calcium (0.14%); phosphorus (0.12%), and the nutritional content of savory cookies fortified with milkfish bone had nutritional content such as moisture content (7.83%); ash (1.83%); protein (4.33%); fat (28.46%); carbohydrates (57.70%); calcium (0.18%); phosphorus (0.17%).
Evaluation of Eucheuma cottonii and Gracilaria sp. as Food Buffer for The Ibu Kota Nusantara (IKN) Based on Proximate Analysis Simamora, Gevbry Ranti Ramadhani; Kumalaningrum, Amalia Nur; Munfarida, Siti; Siwi, Olga Galih Rakha
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.836-845

Abstract

East Kalimantan Province has great opportunities as a buffer for the IKN economy based on the utilization of marine potential. Eucheuma cottonii and Gracilaria sp. are the red seaweeds (Rhodophyta) most widely cultivated in Indonesia. This study aims to analyze the proximate content in two types of red seaweed, namely E. cottonii (offshore cultivation) and Gracilaria sp. (pond cultivation) obtained from farmers in dry conditions cultivated around the waters of Balikpapan, East Kalimantan, Indonesia. The results of the analysis showed significant differences between cultivation locations. Gracilaria sp. (pond cultivation) taken from Handil (HTK) and Babulu Laut (BALUKE) is considered potential because it has low water content (HTK 26.99 ± 0.02%), and has higher ash content (BALUKE 31.18 ± 0.41%), fat (BALUKE 0.36 ± 0.01%), protein (BALUKE 10.01 ± 0.01%), and crude fiber (HTK 1.90 ± 0.16%) compared to E. cottonii. These findings provide important information for the development of seaweed as a natural resource for the food and health industries. Keywords: Eucheuma cottonii, Food industry, Gracilaria sp., proximate content, Red seaweeds
Co-Authors Bachtiar, Nova Herlin, Farrah Widy Jefri Pandu Hidayat Kumalaningrum, Amalia Nur Munfarida, Siti Siwi, Olga Galih Rakha