<p>Shrimp paste is one of fermented product that use either shrimp (Acetes sp.), or fish, or both of them as raw materials. The use of synthetic dyes on shrimp paste is still often done. This is dangerous because it can give bad effect to the health of consumers. Therefore, it is necessary to use natural dyes instead of synthetic dyes. One of natural dyes that can be used is peel of dragon fruit (Hylocereus polyrhizus). Peel of dragon fruit has anthocyanin pigment that can give red color. The aimed of this research was knowing the effect of adding peel of dragon fruit extract (30%; 35%; 40%) to the color of shrimp paste. The treatments in this study were the addition of different concentrations of peel of dragon fruit extract at third grinding shrimp paste in triplicate. The experimental design used was Completely Randomized Design. The parameters observed include moisture content, salt content, protein content, pH, color, and sensory. Parametric data analyzed by Analysis of Variance (ANOVA) and further test by Honestly Significant Difference (HSD) test if these any differences between samples. Non-parametric data analyzed by Kruskal-Wallis and further test by Mann Whitney. The research’s result showed that processing shrimp paste with different peel of dragon fruit extract concentrations gave significant effect (P<5%) on moisture content, salt content, pH, and color. Moisture content values was ranged from 35,0741,01% and salt content values was ranged from 6,35-7,05%. pH values was ranged from 6,40-7,20. Shrimp paste with peel of dragon fruit extract 40% had more red color and improve the appearance of shrimp paste.</p>
Kulit ikan nila merupakan hasil samping dari produk filet ikan nila yang kurang dimanfaatkan, sedangkan apabila tidak segera diproses, kulit ikan nila akan mengalami kebusukan. Salah satu pemanfaatan kulit ikan nila adalah diolah menjadi kerupuk kulit. Kualitas kerupuk kulit ikan nila dipengaruhi oleh kandungan minyak setelah penggorengan. Oleh karena itu, tujuan dari penelitian ini adalah untuk mengetahui kualitas kerupuk kulit ikan nila yang diproses dengan perlakuan spinner maupun tanpa spinner selama penyimpanan. Kerupuk kulit ikan nila dilakukan pengamatan kadar air, angka TBA dan analisis sensoris selama penyimpanan. Pengamatan dilakukan pada hari ke 0, 5, 10, dan 15. Hasil menunjukkan bahwa selama penyimpanan, kerupuk kulit ikan nila baik dengan perlakuan spinner maupun tanpa spinner mengalami peningkatan kadar air dan angka TBA tetapi masih memenuhi standar sampai pada penyimpanan hari ke 15, yaitu kadar air 5,43% dan angka TBA 0,36 mg malonaldehid/kg untuk kerupuk kulit ikan nila dengan perlakuan spinner sedangkan kerupuk kulit ikan nila tanpa perlakuan spinner memiliki kadar air 6,53% dan angka TBA 0,40 mg malonaldehid/kg. Secara keseluruhan, kerupuk kulit ikan nila dengan perlakuan spinner masih diterima panelis sampai pada penyimpanan hari ke 15 sedangkan kerupuk kulit ikan nila tanpa perlakuan spinner masih diterima panelis pada penyimpanan hari ke 10.
Udang putih (Penaeus merguensis) merupakan salah satu produk perikanan yang memiliki sifat mudah busuk (highly perishable). Serbuk simplisia biji pepaya (C. papaya L.) mengandung senyawa aktif flavonoid, fenol, tanin dan saponin yang dapat digunakan sebagai antibakteri. Penelitian ini bertujuan untuk menentukan efektivitas serbuk simplisia biji pepaya terhadap masa simpan udang putih selama penyimpanan dingin. Penelitian ini menggunakan Rancangan Acak Lengkap Faktorial (RALF)<br />dengan 2 faktor yaitu konsentrasi serbuk simplisia biji pepaya (0% dan 4%) dan lama penyimpanan (0, 4, 8 dan 12 hari). Data terdiri dari analisis fitokimia dan rendemen serbuk simplisia biji pepaya, Total Plate Count (TPC), Total Volatile Base Nitrogen (TVBN), organoleptik dan pH udang putih hasil penelitian. Rendemen serbuk simplisia biji pepaya sebesar 40,67% dengan kandungan flavonoid 0,12%, saponin 0,24%, fenol 0,67%, dan tanin 0,72%. Udang putih segar yang disimpan dengan serbuk simplisia biji pepaya konsentrasi 4% mampu bertahan hingga hari ke-12 dibandingkan dengan udang putih segar tanpa serbuk simplisia (kontrol) yang hanya bertahan hingga hari ke-8. Perbedaan konsentrasi serbuk simplisia biji pepaya dan lama penyimpanan memberikan pengaruh nyata (p<5%) terhadap nilai TPC, pH serta organoleptik. Nilai TPC udang putih yaitu 7,1x105 CFU/gram, TVBN 33,60 mgN/100g, nilai pH 7,26 dan<br />nilai organoleptik 6,7.<br /><br />
ABSTRAKBakteri S. aureus dan E. coli merupakan bakteri patogen yang sering menjadi masalah pada produk makanan terutama pada produk perikanan, sehingga diperlukan senyawa antibakteri yang efektif untuk menghambat pertumbuhannya. Rumput laut Sargassum sp. memiliki senyawa bioaktif yang dapat berfungsi sebagai senyawa antibakteri, seperti flavonoid, saponin, tannin, dan fenol. Tujuan dari penelitian ini adalah untuk mengetahui kandungan fitokimia pada ekstrak rumput laut Sargassum sp. dan mengetahui pengaruh penambahan konsentrasi terhadap pertumbuhan bakteri S. aureus dan E. coli. metode yang digunakan pada penelitian ini adalah eksperimental laboratoris dengan menggunakan model Rancangan Acak Lengkap (RAL). Parameter pengujian yang dilakukan adalah uji fitokimia kuantitatif ekstrak rumput laut Sargassum sp. dan zona hambat ekstrak rumput laut Sargassum sp. menggunakan metode difusi sumur dengan penambahan konsentrasi 0%, 5%, 10%, 15% dan dilakukan 3 kali ulangan. Data hasil uji zona hambat dianalisis menggunakan uji ANOVA (Analysis Of Varians) dan Beda Nyata Jujur (BNJ). Hasil uji fitokimia kuantitatif ekstrak rumput laut terbaik diperoleh pada senyawa saponin yaitu sebesar 3,50±0,06 % sedangkan hasil terendah yaitu fenol 0,09±0,05 %. Hasil penelitian zona hambat menggunakan metode difusi sumur menghasilkan diameter pada bakteri S. aureus berkisar 1,527±0,326 mm sampai 6,323±0,27 mm, sedangkan diameter pada bakteri E.coli berkisar 0±0 mm sampai 3,58±0,33 mm. Berdasarkan hasil tersebut, penambahan konsentrasi ekstrak rumput laut Sargassum sp. memberikan pengaruh terhadap diameter zona hambat bakteri S. aureus dan E. coli.Kata kunci: Rumput Laut Sargassum sp., Fitokimia, Antibakteri, Staphylococcus aureus, dan Eschericia coliABSTRACTS. aureus and E. coli bacteria is a pathogenic bacteria that often cause problems in food products especially in fishery products, so that an effective antibacterial compound is needed to inhibit their growth. Sargassum sp. seaweed has a bioactive compound that can be functioned as antibacterial compound, such as flavonoid, saponin, tannin, and phenol. The aim of this research was to know the phytochemical content in Sargassum sp. seaweed extract and to know the effect of concentration added to the S. aureus and E. coli bacteria growth. This research was using experimental laboratories method with Completely Randomized research Design (CRD). The conducted testing parameter were Quantitative Phytochemical Analysis and Inhibition Zone on Sargassum sp. seaweed extract using diffusion well method with 0%, 5%, 10%, and 15% added concentration for triplicates. The inhibition zone’s data were analyzed using ANOVA (Analysis of Variance) and Honestly SignificaNt Difference (HSD). The best quantitative phytochemical results of seaweed extract was found in the saponin compound which was 3,50 ± 0,06 %while the lowest was found in phenol which was 0,09±0.05 %. The inhibition zone research results using diffusion well method resulted on the S. aureus bacteria’s diameter which was about 1,527±0,326 mm until 6,323 ± 0,27 mm, while E.coli bacteria has about 0±0 mm until 3,58±0,33 mm diameter. Based on the research results above, the concentration addition of Sargassum sp. seaweed extract gave effect to the inhibition zone’s diameter of S. aureus and E. coli bacteria.Keywords: Sargassum sp. Seaweed, Phytochemical, Antibacterial, Staphylococcus aureus, and Eschericia coli
<p>Striped catfish (<em>Pangasius hypophthalmus</em>) is a high-fat fish compared to other freshwater fish like snakehead fish and carp. Striped catfish oil contains unsaturated and polyunsaturated fatty acids that are beneficial for health. The quality of catfish oil is affected by the extraction method, especially the preliminary heating temperature for the extraction. This study aimed to determine the effect of different heating temperatures on the characteristics of catfish oil and find the best heating temperature in the dry rendering process. This study used a completely randomized design with three different heating temperatures (80°C, 100°C and 120°C). The result showed that the extraction at various temperatures was significantly different on the yield, moisture content, peroxide value, iodine value, free fatty acids value and slip melting point, but not significantly different in sensory properties. A higher heating temperature could increase the yield percentage, free fatty acids values, peroxide values, iodine values, except to the moisture contents, slip melting point and fatty acid profiles. The best temperature was 100°C for 20 minutes with 9.09% yield, 1.44% moisture content, 1.72% free fatty acid, 15.82% iodine value and sensory of 7.65<µ<8.15. Based on the results, it can be concluded that the dry rendering temperature affects the characteristics of the catfish oil.</p>
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