Abstract–Bigeye scad resources which landed at Bitung Oceanic Fishing Port is one of important fish capture in Bitung because its have economic value and second ratings after scad mackerel in product volume. Bigeye scad fish capture was often mixed with another species in fisherman fish capture, so it making difficult to distinguish clearly.The objective of this research are : 1) to indentification bigeye scad in morfology, 2) to analyzemolecular bigeye scad, (3) to evidence the bigeye scad are the same species or not.Sample for the study were collectedfish landing site at Bitung Ocean Fishing Port from December 2015 to March 2016. The methodology of the research is survey research. For data analysis using truss morfometrics, principal component analysis (PCA) and mtDNA region COI. The result of this research indicated that based on the analysis of morphometric characters and PCA, bigeye scad and smalleye scad have differences in morphology, but result of mt DNA-COI analysis indicated those species are the same as Selar crumenophthalmus with similarity value 99,67%. Keywords: bigeye scad, morfometric, mtDNA-COI

The purpose of this research is to determine the best liquid smoked tandipang fish product and determine the best storage capacity of liquid smoked tandipang fish. Smoking is a combination of drying techniques and the addition of chemical compounds from wood burning to maintain fish durability. Liquid smoking uses liquid smoke as a smoking medium (Utomo et al, 2012). The use of liquid smoke is to provide a specific color effect, taste, and smoky flavor. The method used in this research is experimental by conducting experiments to see a result. The experimental design used was a randomized block design (RBD) using ANOVA. The materials used are tandipang fish, liquid smoke, chemicals for quality testing and the tools used are gas ovens, drying cabinets, laboratory equipment, containers for placing tandipang fish (para-para). Liquid smoke used is liquid smoke produced by CV. Wulung Prima. Based on the research results, it can be concluded that: 1) The best liquid smoke tandipang fish product is produced by immersing liquid smoke with a concentration of 3% for 45 minutes. 2) Shelf life of the best liquid smoked tandipang fish at room temperature based on the peroxide number, namely 7.2 months.Keywords: Best treatment, liquid smoke, shelflifes, smoking, tandipang fish.

The clusters of scad (Selar) which caught around Bitung waters so far has not been genetically confirmed, which has led to differences in the Bitung community's assumptions about the constituent species of Mackerel. The first assumption is that Scads in Bitung waters consist of 2 species only and the second assumption states that it consists of 3 species. To answer these problems, it is necessary to study validly the species based on genetic characteristics and nomenclature. There were 4 species of Scad caught in the waters around Bitung, covering Tude, Oci, Tude Batu and Ekor Kuning Napo according to the local names. This research aimed to obtain the genetic characteristics of Mackerel scad species and to obtain valid species according to the nomenclature. Data analysis was conducted using morphological and genetic approaches. The results showed the constituent genetic characteristics of the scad captured in the waters around Bitung. Based on DNA-COI analysis and nomenclature results, Tude and Oci species have 90% similarity with each other and belong to the same species of Selar crumenophthalmus, Tude Batu is Selar boops with 90% similarity and Ekor Kuning Napo is Selaroides leptolepis with 98% similarity. From these results, it can be concluded that there are only 3 (three) species of scad seen from the nomenclature, namely Selar crumenophthalmus, Selar boops and Selaroides leptolepis.

This rice straw waste contains high levels of hemicellulose, cellulsoa and lignin. Cellulose content is high enough so that the rice waste has the potential as a base for making liquid smoke. One of the uses of liquid smoke is in fish products. The treatment that will be carried out in this study is based on the way the liquid smoke concentration is given to the product, the duration of cooking pressure and the method of liquid smoke. The treatment is: Liquid Smoke Concentration (A), A1: 0.8%, A2: 1.2%, Duration of Presto (B), B1: 60 Minutes, B2: 90 Minutes, B3: 120 Minutes, Method of Giving Liquid Smoke (C), C1: Soaked in Liquid Smoke for 5 minutes then dippedo and then dried at 150 ° C for 30 minutes, C2: Dipresto then soaked in Liquid Smoke for 5 minutes then dried at 150 ° C for 30 minutes, C3: Dipresto in Smoke The liquid is then dried at 150 ° C for 30 minutes. Based on the results of the research obtained, it can be concluded that: Rice Straw can be used as a material for making liquid smoke, Cakalang fish dipresto with liquid smoke using rice straw as the main raw material for skipjack tuna for all treatments, has good quality. Variations in testing of variations in treatment combinations, showed varying differences in each combination of treatments and there was no fixed combination of treatments to describe one test. Hedonic testing, the treatment that shows good results is at a concentration of 1.2%, presto time 90 minutes using either dipresto method or soaked first. In testing the trio duo, the treatment that showed good results was at a concentration of 0.8%, presto time 60 and 90 minutes was also good with the method of either dipresto first or soaked first.