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Purifikasi dan Karakterisasi Kolagenase dari Organ Dalam Ikan Bandeng (Chanos chanos, Forskal)
No full textThe texture of fish is an important quality characteristic,and soft fillets are a problem for the fish industry. The quality of fish muscle will deteriorate during iced storage of raw fish. Endogenous proteases, which are able to hydrolyze different proteins in the muscle, are important early in the deterioration process. Endogenous fish muscle proteases are located in intracellular fluids and in the sarcoplasm, or they are associated with various cell organelles. In the live animal, the proteases function in muscle protein turnover. After death, the biological regulation of the enzymes is lost, and the enzymes hydrolyze muscle proteins and resolve the rigor mortis contraction. The proteolytic enzymes to be important for the textural properties of fish muscle, namely calpains, cathepsins, and collagenases
KARAKTERISTIK KIMIA HIDROLISAT PROTEIN DAN PENGUAT RASA DARI HASIL SAMPING FILLET IKAN KAKAP (Lutjanus sp) YANG DIHIDROLISIS SECARA ENZIMATIS
Get PDFHidrolisat protein ikan merupakan produk yang dihasilkan dari penguraian protein ikan menjadi peptida sederhana dan asam amino melalui proses hidrolisis oleh enzim, asam, atau basa. Hidrolisis secara enzimatis menggunakan jenis enzim protease dapat dipilih dengan pertimbangan apabila hasil produknya akan digunakan sebagai bahan tambahan pangan. Tujuan dari penelitian ini adalah mengetahui kandungan kimia, nilai kelarutan, dan warna hidrolisat protein serta produk penguat rasa. Hidrolisat protein diproduksi menggunakan proses hidrolisis, filtrasi bertingkat, pengeringan, pencampuran bahan pengikat dan formulasi. Parameter kualitas hidrolisat protein dan produk penguat rasa ditentukan dengan menguji kandungan kimia, warna dan tingkat kelarutan di dalam air. Hidrolisat protein dan produk penguat rasa memiliki kandungan protein antara 9,49 - 11,37% (bk). Hidrolisat protein dan produk penguat rasa memiliki tingkat kelarutan antara 99,94 - 99,99%.Hasil uji warna menunjukkan hidrolisat protein memiliki warna lebih cerah dengan nilai L* 94,80 dibandingkan produk penguat rasa yang memiliki warna lebih gelap berspektrum hijau merah dengan nilai a* 1,32 - 1,84. Hidrolisat protein dan produk penguat rasa memiliki kandungan protein cukup tinggi serta asam amino yang lengkap, sehingga sangat baik digunakan sebagai bahan pangan fungsional yang berguna bagi tubuh
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
PENANGANAN IKAN HASIL TANGKAPAN DI ATAS KAPAL DAN DI PENDARATAN: PENERAPAN, DAMPAK, DAN UPAYA PERBAIKANNYA
Get PDFTeknik penanganan ikan yang baik menjadi kunci untuk mempertahankan mutu ikan hasil tangkapan. Prinsip penanganan ikan di atas kapal dan di tempat pendaratan ikan di beberapa lokasi masih belum diterapkan secara benar. Tujuan penelitian ini untuk mengetahui penerapan cara penanganan ikan yang baik di atas kapal dan di tempat pendaratan, mengetahui dampak dari penerapan cara penanganan ikan yang tidak sesuai, dan mengetahui upaya yang telah dilakukan untuk meningkatkan penerapan cara penanganan ikan yang baik oleh pelaku usaha perikanan. Metode penelitian dengan kajian Pustaka dan dianalisis secara kualitatif dengan penjelasan secara deskriptif. Hasil penelitian diketahui cara penanganan ikan yang baik sejak di atas kapal hingga di tempat pendaratan secara umum belum diterapkan secara sempurna. Dampak negatif dari belum baiknya penerapan Teknik penanganan ikan adalah lebih cepatnya terjadi proses kemunduran mutu dan kerugian pendapatan dari menurunnya harga jual ikan akibat penurunan mutu ikan. Upaya perbaikan sudah dilakukan dengan memberikan pelatihan kepada pelaku usaha perikanan di kapal dan Pelabuhan tentang Teknik penanganan ikan yang baik
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
IDENTIFIKASI KANDUNGAN FORMALIN DAN KORELASI PENGETAHUAN DENGAN SIKAP PEDAGANG IKAN ASIN DI PASAR BARU JUWANA
Get PDFProcessing fish into salted fish is an ancient traditional way that is still widely done in various countries including Indonesia. Although salted fish is very popular with the public, public knowledge about salted fish that is good and safe to consume is still less, it was evidenced by the many circulating salted fish sold in the market containing formalin. The purpose of the study was to identify the formalin content in salted fish in the Pasar Baru, Juwana, Pati City, knowing the character of traders, and the correlation between knowledge and the behavior of salted fish traders. The research methods carried out are by survey method, formalin testing with test kit and Correlation test. The results showed that fish products sold in Pasar Baru Juwana Pati as much as 27.7% of salted fish samples positive for formalin. Types of salted fish products that contain formalin are rebon, teri nasi, sepat, cumi, juwi, kipas, petek, layur, and petek,, Formalin levels are as low as 1.50 mg/kg and highest at 43.49 mg/kg. Characteristics of traders are traders generally aged 51-60 years; most (91.6%) women, more who attend elementary school – high school (58.3%), all married, the longest trading is 0 - 10 years, generally the cost needs to trade around Rp 100,000 – Rp 500,000 and daily income selling salted fish, around Rp. 100,000 – Rp 500,000. The results of the correlation test between the level of knowledge and the behavior of traders show a very strong relationship.Pengolahan ikan menjadi ikan asin adalah cara tradisional kuno yang masih banyak dilakukan di berbagai negara termasuk negara indonesia. Meskipun ikan asin sangat digemari masyarakat, pengetahuan masyarakat mengenai ikan asin yang baik dan aman dikonsumsi masih kurang dibuktikan dengan masih banyak beredar ikan asin diperjual belikan di pasar mengandung formalin.Tujuan penelitian adalah mengidentifikasi kandungan formalin pada ikan asin yang ada di Pasar Baru Juwana Kota Pati, mengetahui karakteristik pedagang, dan korelasi antara pengetahuan dengan perilaku pedagang ikan asin. Metode penelitian yang dilakukan yaitu dengan metode survey, pengujian formalin dengan test kit dan metode SNI-2354-18:2018 serta uji Correlation Pearson. Hasil penelitian menunjukkan produk ikan yang dijual di Pasar Baru Juwana Pati sebanyak 27,7% sampel ikan asin positif mengandung formalin. Jenis produk ikan asin yang mengandung formalin adalah rebon, teri nasi, sepat, cumi, juwi, kipas, petek, layur, dan petek,. Kadar formalinnya terendah 1,50 mg/kg dan tertinggi 43,49 mg/kg. Karakteristik pedagang adalah pedagang umumnya berumur 51-60 tahun; sebagian besar (91,6 %) perempuan, lebih banyak yang bersekolah SD – SMA (58,3 %), semuanya sudah menikah, lama berdagang yang terbanyak 0 – 10 tahun, umumnya kebutuhan biaya untuk berdagang sekitar Rp 100.000 – Rp 500.000, dan sebagian besar berpendapatan perhari berjualan ikan asin, sekitar Rp 100.000 – Rp 500.000. Hasil uji korelasi antara tingkat pengetahuan dengan perilaku pedagang menunjukkan adanya hubungan yang sangat kuat
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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