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Characterization of edible film from catfish (Pangasius sp.) surimi waste water with the addition sorbitol as plasticizer

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Tanjung M. R., Rostini I., Ismail M. R., Pratama R. I.
World News of Natural Sciences
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2020
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vol. 28
87-102
EN
This research aims are know and determine the best concentration of sorbitol as a plasticizer that produces the best edible film characteristics. This research was conducted at Laboratorium Pengolahan Hasil Perikanan, Faculty of Fisheries and Marine Science Universitas Padjadjaran. Research began in July to August 2019. The method used was a Completely Randomized Design (CRD) with 3 treatments and 3 repeat, namely treatments A (0.4%), B (1.2%), and C (2%). The parameters measured are thickness, tensile strength, percent elongation, transparency, moisture content, and solubility. The results showed that the addition of sorbitol had a significant influence on the characteristics of edible films. The best concentration is the addition of sorbitol 1.2% with 0.079 mm thickness value, 6.09 MPa tensile strength, 111.67% elongation, 4.37% and 95.63% transparency and clear degrees, 9.20% water content, and 35.56% solubility. Edible films in this research have met The Japanese Industrial Standard (JIS).
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Construction of Traps (Krendet) as traditional fishing gear of Lobster (Panulirus sp.) in Pangandaran Regency, Indonesia

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Rina R., Dewanti L. P., Ismail M. R., Apriliani I. M.
World News of Natural Sciences
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2022
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vol. 41
85-97
EN
The fishing gear used by the majority of fishermen on Madasari Beach, Pangandaran Regency, Indonesia is the krendet as known as fishing traps. Krendet is a passive fishing gear and is classified as trap net a selective because the lobster caught is legal size of lobster, which is above 200 grams. Krendet has a construction of a frame, net, bait line, towing line and ballast. One of the commodities is lobster (Panulirus sp.). Lobster catching permits have been regulated in the Minister of Maritime Affairs and Fisheries Regulation No. 17 of 2021, its stated regarding permitted lobster catching with carapace lengths above 6 cm or weight above 150 grams per head for sand lobster (Panulirus homarus). This study aims to determine the construction of the fishing gear krendet used by the fishermen of Madasari Beach, Pangandaran Regency. Based on observations that the webbing is made of PA monofilament with 3.5 inches mesh size. The Frame is made of iron in the form of a circle with a diameter of ±60 cm. The ballast used was made of stone with a weight of ±1.5 kg. The traps (krendet) also consist towing rope and a float rope. The tow rope is made of monofilament with a size of 3-4 mm diameters and a length of 15-30 m, while the float rope is made of polyethylene (PE) with a size of 1.5 mm and a length of about ±60 cm.
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