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All Journal agriTECH Caraka Tani: Journal of Sustainable Agriculture Journal of Tropical AgriFood Jurnal Teknologi Hasil Pertanian

Edhi Nurhartadi

Program Studi Ilmu Dan Teknologi Pangan, Fakultas Pertanian, Universitas Sebelas Maret, Jl. Ir. Sutami 36 A, Kentingan, Surakarta 57126

Author-ID : 2870791

Agriculture, Biological Sciences & Forestry

Published : 7 Documents Claim Missing Document

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Articles

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Pengaruh Minyak Atsiri Jahe Merah dan Lengkuas Merah pada Edible Coating Terhadap Kualitas Fillet Ikan Patin Rohula Utami; Kawiji Kawiji; Edhi Nurhartadi; Muslika Kurniasih; Dedy Indianto
agriTECH Vol 33, No 4 (2013)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The effects of edible coating enriched with red ginger and red galangal essential oil on the quality of patin fillets during refrigerated storage of 8 days were examined. fish quality determined was based on microbiological (Total Plate Count /TPc) and physicochemical (Total Volatile Bases/TVB, Thiobarbituricacid/TBa, pH, and color) quality. Treatment variation of patin fillets were essential oil concentration enriched in edible coating (0 %, 0.1%, 1%). The results indicated that both red ginger and red galangal essential oil could affect patin fish fillets quality. Essential oilenrichment edible coating will retain the patin fillets quality. In terms of microbial quality and TVB value, 1% essential oil of red ginger and red galangal enrichment in edible coating could extend shelf life of patin fillets for 2-4 days.ABSTRAKPenentuan pengaruh penambahan minyak atsiri jahe merah dan lengkuas merah dalam edible coating terhadap kualitas fillet ikan patin selama penyimpanan dingin dilakukan pada periode waktu 8 hari. Parameter kualitas ikan yang dianalisis adalah kualitas mikrobiologis (Total Plate Count/TPc), dan kualitas fisikokimia (Total Volatile Bases/TVB, Thiobarbituricacid/TBa, pH, dan warna). Variasi perlakuan fillet ikan patin yaitu konsentrasi minyak atsiri (0 %; 0,1%; 1%) yang ditambahkan dalam edible coating. Hasil penelitian ini mengindikasikan bahwa penambahan minyak atsiri baik jahe merah maupun lengkuas merah berpengaruh terhadap kualitas fillet ikan patin selama penyimpanan dingin. Penambahan minyak atsiri dalam edible coating mampu mempertahankan kualitas fillet ikan patin lebih baik dibandingkan perlakuan edible coating tanpa minyak atsiri. Berdasarkan kualitas mikrobiologis dan nilai TVB, perlakuan minyak atsiri jahe merah 1% dan minyak atsiri lengkuas merah 1% mampu meningkatkan umur simpan fillet ikan patin selama 2-4 hari.

Formulasi Pangan Darurat Berbentuk Food Bars Berbasis Tepung Millet Putih (Panicum milliaceum L.) dan Tepung Kacang Merah (Phaseolus vulgaris L.) Raden Baskara Katri Anandito; Siswanti Siswanti; Edhi Nurhartadi; Rini Hapsari
agriTECH Vol 36, No 1 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This study aimed to obtain a formula emergency food in the form food bars made from white millet flour and red bean flour. Foodbars made with Intermediate Moisture Food (IMF) technology with wet dyeing technique. This study used completely randomized design (CRD), which consists of a single factor, namely the variation formula white millet flour and red bean flour. The results showed that the formula food bars with the highest level of consumer acceptance in the composition of 15 g of white millet flour, red bean flour 10 g, 2 g sugar, 10 g margarine, milk full cream 13 g, 6.043 g and the addition of water. In 100 g of food bars contained water, ash, protein, fat, carbohydrate, and caloric value a respectively of 16.45%, 1.45%, 10.99%, 35.39%, 42.26%, 0 , 81 and 233.80 kcallbar.ABSTRAKPenelitian ini bertujuan untuk memperoleh formula pangan darurat berbentuk food bars berbahan dasar tepung millet putih dan tepung kacang merah. Food bars dibuat dengan teknologi Intermediate Moisture Food (IMF) dengan teknik pencelupan basah. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari satu faktor yaitu variasi formula tepung millet putih dan tepung kacang merah (15:10; 12,5:12,5; 10:15). Hasil penelitian menunjukkan bahwa formula food bars dengan tingkat penerimaan konsumen tertinggi pada komposisi tepung millet putih 15 g, tepung kacang merah 10 g, gula halus 2 g, margarine 10 g, susu full cream 13 g, dan penambahan air 6,043 g. Dalam 100 g food bars terkandung air, abu, protein, lemak, karbohidrat nilai a dan kalori berturut-turut sebesar 16,45%,1,45%, 10,99%, 35,39%, 42,26%, 0,81 dan 233,80 kkallbar.

Fermentasi Whey Keju Menggunakan Biji Kefir (Kefir Grains) dengan Variasi Sumber Nitrogen Rohula Utami; Edhi Nurhartadi; Asri Nursiwi; Martina Andriani
agriTECH Vol 37, No 4 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Cheese whey is a waste product in cheese processing which contains 4–5% of lactose. Having high carbon source, this material could be a potential fermentation medium for kefir grains. During fermentation of kefir grains, alcohol, lactic acid and exopolysaccharide (kefiran) were produced. The kefir grains fermentation also affected by nitrogen source. Therefore, effects of different composition of lactose and nitrogen sources (including yeast extract, urea and mung bean sprouts extract) in the fermentation were examined in this study. The results showed that after 24 hours of incubation, kefir grains biomass reached 21.30-27.15 g (dry wt, g/250mL medium) from 25 g of intial kefir grains biomass. Fermentation broth showed pH values ranged from 3.49–3.94; alcohol level ranged from 0.11-0.31%; and lactic acid content ranged from 0.49–1.47%. The total of kefiran extracted from kefir grain and fermentation broth ranged from 0.63-1.76 g/L. This study indicated that cheese whey can be used as fermentation medium to produce alcohol, lactic acid and kefiran by kefir grains. The highest production of kefiran was achieved in the medium containing 1.2% of whey lactose and 4% of mung bean sprouts extract.Cheese whey is a waste product from cheese processing industry which still has lactose content of 4-5%, so that it can be used as a carbon source in the fermentation medium of kefir grains. During fermentation of kefir grains, alcohol, lactic acid and exopolysaccharide commonly called as kefiran were produced. The kefir grains fermentation also affected by nitrogen source. Furthermore, fermentation medium composition were varied at whey lactose concentration and nitrogen source composition (yeast extract, urea and mung bean sprouts extract) for kefir grains fermentation. The results showed that after 24 hours fermentation, kefir grains biomass ranged from 21.30-27.15 g; pH values ranged from 3.49-3.94; alcohol level ranged from 0.11-0.31%; lactic acid content ranged from 0.49-1.47%; and the total of kefiran ranged from 0.63-1.76 g/L. Fermentation medium composition that produced the higher total of kefiran was 1,2% whey lactose and 4% mung bean sprouts extract as nitrogen source. ABSTRAKWhey keju adalah produk sampingan dari industri pengolahan keju yang masih memiliki kandungan laktosa sebesar 4–5% sehingga dapat dimanfaatkan sebagai sumber karbon pada media fermentasi oleh biji kefir. Selama proses fermentasi menggunakan biji kefir terjadi pembentukan alkohol, asam laktat dan eksopolisakarida (kefiran). Sumber nitrogen juga dapat mempengaruhi proses fermentasi. Oleh karena itu, dalam penelitian ini dilakukan variasi perlakuan, yaitu variasi konsentrasi laktosa pada whey dan variasi komposisi sumber nitrogen (yeast extract, urea dan ekstrak tauge kacang hijau) sebagai media fermentasi oleh biji kefir. Setelah fermentasi biji kefir selama 24 jam, jumlah biomassa biji kefir berkisar antara 21,30–27,15 g (berat kering g/250 mL medium fermentasi) dari jumlah biomassa awal 25 g. Cairan fermentasi menunjukkan nilai pH berkisar antara 3,49–3,94; kadar alkohol berkisar antara 0,11–0,31% dan kadar asam laktat berkisar antara 0,49–1,47%. Total rendemen kefiran yang didapatkan dari ekstraksi biji kefir dan cairan fermentasi berkisar antara 0,63–1,76 g/L. Hasil penelitian ini mengindikasikan bahwa whey keju dengan penambahan sumber nitrogen dapat digunakan sebagai medium fermentasi oleh biji kefir untuk menghasilkan metabolit berupa alkohol, asam laktat dan kefiran. Variasi formulasi media fermentasi yang menghasilkan kefiran dalam jumlah tertinggi adalah penggunaan konsentrasi laktosa whey keju 1,2% dan sumber nitrogen dari ekstrak tauge kacang hijau sebesar 4%.

Co-Authors Asri Nursiwi Dedy Indianto Esti Widowati Esti Widowati Fenny Fenny Heni Pujiastuti Kawiji, Kawiji Lukita Purnamayati M.A.M Andriani Martina Andriani Muslika Kurniasih R. Baskara Katri Anandito Rachmad Abraham Firdaus Raden Baskara Katri Anandito Rohula Utami Siswanti Siswanti Siswanti Siswanti

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