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Pengaruh Perendaman Natrium Bikarbonat terhadap Karakteristik Tepung Ikan Teri sebagai Sumber Fosfor dan Kalsium : Effects of Sodium Bicarbonate Immersion on Characteristics of Anchovy Flour as a Source of Phosphorus and Calcium Christina Litaay; Ashri Indriati; Nur Kartika Indah Mayasti; Cahya Edi Wahyu Anggara; Hendarwin M Astro
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 24 No 2 (2021): Jurnal Pengolahan Hasil Perikanan Indonesia 24(2)
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v24i2.33756

Ikan teri memiliki sumber nutrisi penting dan nilai ekonomis yang tinggi, tetapi belum dapat dimanfaatkan secara maksimal. Bentuk pengolahan ikan teri yang dilakukan adalah memanfaatkan ikan teri dalam bentuk tepung sumber protein, kalsium dan fosfor. Penelitian ini bertujuan untuk menentukan pengaruh perendaman dalam natrium bikarbonat 0,8% terhadap kadar kalsium dan fosfor tepung ikan teri. Perlakuan yang dilakukan adalah proses perendaman ikan dalam natrium bikarbonat 0,8% dengan variasi lama perendaman 15 menit (D1), 30 menit (D2), dan 45 menit (D3). Parameter dalam penelitian yang diamati antara lain kadar abu, kadar air, kadar protein, kadar lemak, kadar kalsium, dan kadar fosfor. Hasil penelitian menunjukkan bahwa perendaman ikan selama 30 menit memberikan kadar kalsium dan fosfor yang tertinggi masing-masing 6.136,33±53,85 mg/100 g (bk) dan 31.915,20±235,30 mg/kg (bk), dengan kadar protein sebesar 66,25±0,01% (bk).

THE EFFECTS OF DIFFERENT IMMERSION METHOD AND TIME ON THE PHYSICO-CHEMICAL CHARACTERISTICS OF SKIPJACK TUNA (Katsuwonus pelamis) FISH MEAL Christina Litaay; Joko Santoso
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

High fat content in a dark fleshed fish can affect on nutritional value because it can lead to odors in fish meal products. Effort Immersion (deffating) is one way to reduce fat content in fish meal products in order to reduce the products from odor. Research on methods and durations of immersion effects were conducted from October to November 2011. This study aimed to determine the best method to get quality materials skipjact tuna fish meal based on methods and durations of immersion. Fish sampling were taken from the village of Latuhalat, Ambon-Maluku waters. Deffating process used water, 3% acetic acid, and 0.8% sodium bicarbonate. Immersion durations were 2, 4, and 6 hours. Deffating method using 0.8% sodium bicarbonate with 6 hours immersion time exhibited the best quality fish meal with protein content of 82.86% and 1.10% fat content. Keywords: deffating, fish meal, skipjact tuna.

DISTRIBUTIONAND DIVERSITY OF MACRO ALGAE COMMUNITIES IN THE AMBON BAY Christina Litaay
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Water conditions affected by natural and anthropogenic parameters such as sedimentation and solid waste disposal can influence the growth and distribution of macro algae. Sustainable management efforts can reduce damage on the Gulf coast of Ambon due to human activities and land clearing. This study was conducted in October 2008 using the transect method with 3 replicates in five locations i.e., Tantui, Air Salobar, Hative Besar, Halong, and Lateri. The interior and exterior waters of Ambon Bay contained different habitat conditions due to sedimentation processes. The purpose of this study was to determine the distribution and diversity of macro algae communities in the Ambon Bay. The results found 21 species of macro- algae consisting of 10 species of Rhodhophyceae, 6 species of Chlorophyceae, and 5 species of Phaeophyceae. The highest density value of seaweed in Tantui was 389.0 g/m² of Chlorophyceae of Halimeda genus. In Air Salobar and Halong, the highest density value was Rhodophyceae of Gracilaria genus of 172.0 g/m² and 155.0 g/m², respectively. For the other genus in the Tantui and Lateri regions were dominated by Ulva at 92.10 gr/m2 and Padina of 20.0 gr/m2, respectively. The highest dominance of macro algae in the Hative Besar was found Chlorophyceae of Halimeda genus of 2.93 %, in the Air Salobar of Phaeophyceae of Turbinaria genus of 1.43 %. The difference values in density and the dominance of macro algae indicated an influence of habitat and environment due to seasons, sediment, and solid waste disposal to the diversity of macro algae. Keywords: Diversity, macro algae, Ambon Bay.

Application of Rabbit Urine and Manure Based Fertilizer on the Growth of Arabica and Robusta Coffee Seedlings Prajanti, Sucihatiningsih Dian Wisika; Litaay, Christina; Widiatningrum, Talitha; Amelia, Dhea Rizky; Daud, Dalila
Biosaintifika: Journal of Biology & Biology Education Vol 15, No 3 (2023): December 2023
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v15i3.48027

Coffee farming demands substantial amounts of fertilizer. Furthermore, the expensive cost of chemical fertilizers prompt coffee growers to seek alternative remedies. One emerging solution is the utilization of organic fertilizer. This study aims to assess the impact of organic fertilizer, specifically made from rabbit manure and urine, on the growth of Arabica and Robusta coffee seedlings. The experiment focused on the context of coffee cultivation in Temanggung Regency, comparing the effects with goat manure fertilizer. The method was initiated by producing organic fertilizer, encompassing rabbit manure, goat manure, and rabbit urine. Then, the fertilizer was applied to Arabica and Robusta seedlings. The research employs quantitative and descriptive analyses. Quantitative data encompasses the nutrient content of each fertilizer and soil, plant height, leaves number, and stem diameter. Descriptive analysis involves the overall performance evaluation. The application of rabbit manure and urine as fertilizers to Arabica and Robusta coffee seedlings yields positive outcomes, i.e. enhancing plant height, leaves number, and seedling diameter. Among the tested organic fertilizers, rabbit urine notably influenced the plant height, leaves number, and stem diameter of both seedlings. The performance of the rabbit urine treatment exhibited healthier attributes compared to those without any fertilizer, such as sturdy leaves and robust stems. Additionally, the root systems of the untreated plants appear less vigorous with sparser root hairs.

GEOMETRIC DESIGN OF CROWN WORM GEAR WITH STRAIGHT-LINED BLADE PROFILE Andrianto, Moeso; Litaay, Christina; Harun, Suryadiwansa; Burhanuddin, Yanuar; Arifin, Achmad
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1874

Applications for worm gear drives are common in industry. The crown worm drive is a new kind of inventive worm drive that has just been proposed. Nevertheless, no prior research has been done on the geometric design of crown worm gears with straight-lined blade profiles. On the other hand, designing the cutting tool depends on the geometric design of the workpiece surface modeling. As a result, this study proposed a geometric design for the straight-lined blade shape of the crown worm gear. Numerical examples are used to evaluate the accuracy and applicability of the suggested mathematical model. Furthermore, the modeling of a variable center-distance crown worm gear is completed. It is also feasible to model the crown worm gear using different tool profiles, such as concave and convex profiles.

Horticultural Farmer Empowerment Strategy Based on Good Agricultural Practices (GAP): an Analytical Hierarchy Process (AHP) Approach Prajanti, Sucihatiningsih Dian Wisika; Widiatningrum, Talitha; Litaay, Christina; Amelia, Dhea Rizky
Komunitas: International Journal of Indonesian Society and Culture Vol. 16 No. 2 (2024): September 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/komunitas.v16i2.1300

This research aims to develop a Horticultural Farmer Empowerment Strategy Based on Good Agricultural Practices (GAP): an Analytical Hierarchy Process (AHP) Approach. This research took place in Semarang Regency, precisely in Kopeng Village, Getasan Subdistrict, in accordance with the targets and objectives of the research. The research uses primary data and secondary data. Data collection methods in this research are observation, interviews, documentation, and questionnaires. Key persons in this research are academics, government, farmers, communities, community institutions, and business actors. The analytical method used in this research is the Analytical Hierarchy Process (AHP). The research result shows that the priority order of strategies that can be implemented are human resource development, government policy, and institutions. Meanwhile, the order of priority for alternative strategies is sustainable guidance and training for farmers and agribusiness actors in creating business innovations, promotional and marketing training using information and communication technology, and increasing the capacity of farmers and agribusiness actors in the use of tools, production based on renewable technology. The suggestion that can be given in this research is that implementing good agricultural practices requires strong commitment from stakeholders so there is a need for motivation and collaboration between farmers, government, and business actors. The implementation of good agricultural practices needs to be carried out with a consistent strategy so strict supervision is needed.

GEOMETRIC DESIGN OF CROWN WORM GEAR WITH STRAIGHT-LINED BLADE PROFILE Andrianto, Moeso; Litaay, Christina; Harun, Suryadiwansa; Burhanuddin, Yanuar; Arifin, Achmad
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1874

Applications for worm gear drives are common in industry. The crown worm drive is a new kind of inventive worm drive that has just been proposed. Nevertheless, no prior research has been done on the geometric design of crown worm gears with straight-lined blade profiles. On the other hand, designing the cutting tool depends on the geometric design of the workpiece surface modeling. As a result, this study proposed a geometric design for the straight-lined blade shape of the crown worm gear. Numerical examples are used to evaluate the accuracy and applicability of the suggested mathematical model. Furthermore, the modeling of a variable center-distance crown worm gear is completed. It is also feasible to model the crown worm gear using different tool profiles, such as concave and convex profiles.

Karakteristik kimia dan keamanan mikroba tepung ikan teri hitam (Stolephorus commersonii): Chemical characteristics and microbial safety of commerson’s anchovy meal (Stolephorus commersonnii) Litaay, Christina; Indriati, Ashri; Andriansyah, Raden Cecep Erwan; Novianti, Fithria; Purwandoko, Pradeka Brilyan; Rahman, Nurhaidar; Nuraini, Laela; Rahman, Nurhamidar; Hidayat, Taufik
Jurnal Pengolahan Hasil Perikanan Indonesia Vol. 26 No. 3 (2023): Jurnal Pengolahan Hasil Perikanan Indonesia 26 (3)
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v26i3.48355

Ikan teri hitam (Stolephorus commersonii) merupakan jenis ikan pelagis kecil yang bernilai gizi tinggi. Ikan teri hitam memiliki nilai ekonomi yang tinggi, namun pemanfaatannya masih bersifat tradisional. Peningkatan nilai tambah ikan teri hitam dapat dilakukan melalui diversifikasi produk dalam bentuk tepung ikan. Penelitian ini bertujuan untuk menentukan karakteristik tepung ikan teri hitam berdasarkan komposisi kimia, kandungan mineral, dan cemaran mikroba. Metode penelitian yang digunakan adalah metode eksperimen pengolahan tepung ikan menggunakan modifikasi media perendaman air pada suhu 25oC, selama 15 menit. Parameter yang diuji yaitu analisis proksimat, mineral (besi, magnesium, dan kalsium), dan cemaran mikroba (Angka Lempeng Total (ALT), kapang khamir, dan Escherichia coli). Hasil analisis menunjukkan bahwa tepung ikan teri mengandung kadar protein 70,16%, air 9,62%, abu 14,85%, dan lemak 4,55%. Kadar besi (5,99 mg/g), magnesium (163,565 mg/g), dan kalsium (6179,95 mg/g). Cemaran mikroba Angka Lempeng Total (ALT) sebesar 1,15 koloni/g, kapang khamir <10 koloni/g, dan Escherichia coli negatif.

Characteristics of dry noodles based on sago flour enriched with skipjack tuna (Katsuwonus pelamis): Karakteristik mi kering berbasis tepung sagu yang diperkaya ikan cakalang (Katsuwonus pelamis) Litaay, Christina; Santoso, Joko; Hariyanto, Bambang; Indriati, Ashri; Andrianto, Moeso; Purwandoko, Pradeka Brilyan; Rahman, Nurhaidar; Indriawati, Indriawati; Sufiandi, Sandi
Jurnal Pengolahan Hasil Perikanan Indonesia Vol. 27 No. 12 (2024): Jurnal Pengolahan Hasil Perikanan Indonesia 27(12)
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v27i12.55616

Indonesia merupakan salah satu negara dengan konsumsi mi instan terbesar. Permintaan impor gandum meningkat seiring dengan meningkatnya konsumsi mi berbahan tepung terigu. Tepung sagu direkomendasikan untuk digunakan sebagai bahan baku mi. Kandungan gizi ikan dapat meningkatkan nilai gizi produk mi. Penelitian ini bertujuan untuk menentukan konsentrasi tepung ikan cakalang yang optimal untuk mi kering berbahan tepung sagu berdasarkan karakteristik kecerahan dan kesukaan konsumen. Mi kering berbahan dasar sagu terdiri dari lima perlakuan, yaitu kontrol, tepung ikan cakalang 2, 4, 6, dan 8%. Parameter yang dianalisis meliputi lightness dan organoleptik. Perlakuan terbaik kemudian dianalisis kadar protein, abu, dan mikrostruktur. Penambahan tepung ikan cakalang memberikan pengaruh yang nyata (p<0,05) terhadap parameter lightness, aroma, dan keseluruhan. Lightness, aroma, dan nilai keseluruhan mi tepung ikan cakalang 8% lebih baik dibandingkan dengan kontrol dan perlakuan lainnya. Mi kering dengan penambahan tepung ikan cakalang 8% memiliki aroma harum, warna agak kurang bening, rasa mi enak, dan tekstur mendekati kenyal sehingga masih dapat diterima panelis. Perlakuan mi dengan penambahan tepung ikan cakalang 8% menghasilkan kadar protein tinggi, yaitu 5,56% (bk) dan kadar abu 1,12% (bk). Mi dengan penambahan tepung ikan cakalang 8% memiliki butiran elips agak terpotong, sedangkan mi gandum memiliki butiran elips.

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