Judul: Pengaruh Pengemasan Terhadap Mutu Wortel Selama Simulasi Transportasi
Abstrak: Wortel merupakan salah satu jenis sayuran yang mudah rusak karena ~ . ~telah dipanen masih melakukan respirasi apabila tidak ditangani dengan baik. :::t ~nanganan pasca panen wortel bertujuan untuk mempertahankan mutu wortel o ~hingga diterima konsumen dalam keadaan yang masih baik. Salah satu !enanganan wortel yang baik adalah dengan memberikan kemasan yang dapat ~elidungi wortel dari kerusakan mekanis dan kehilangan susut bobot. OJ :::l Tujuan khusus dari penelitian ini adalah untuk mengetahui pengaruh jenis s.emasan luar (sekunder) terhadap mutu wortel selama transportasi, mengetahui c ~ngaruh kombinasi jenis kemasan luar (sekunder) dan kemasan dalam (primer) CD ~rhadap perubahan mutu wortel selama transportasi dan kondisi jalan, dan §ienentukan jenis kemasan yang sesuai dengan transportasi dan kondisi jalan.
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Judul: Pengaruh dua jenis kemasan pada dua tingkat suhu terhadap kualitas dan daya simpan wortel )Daucus carota L.)
Abstrak: Sayur-sayuran termasuk komoditas pertanian yang mudah rusak (perishable) sehingga masa edarnya di pasaran sangat singkat. Untuk kesuksesan pemasaran sayuran baik di dalam maupun luar negeri diperlukan penanganan lepas panen yang memadai. Penanganan lepas panen di Indonesia umumnya masih sangat kurang, diperkirakan terjadi kerusakan komoditas se- besar 30 50 persen sesampainya di tangan konsumen. Adanya informasi mengenai alternatif kombinasi penggunaan jenis kemasan dan suhu selama penyimpanan diharapkan dapat menghambat atau mengurangi kerusakan komoditas selama penanganan dan dapat mempertahankan mutu sayuran dalam jangka waktu yang lama. Penelitian ini bertujuan untuk mempelajari penyimpanan wortel dan pengaruh dari jenis kemasan, suhu dan lama penyimpanan terhadap perubahan fisik, kimia, organoleptik dari wortel selama waktu tertentu. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap dengan 3 perlakuan dan 2 kali ulangan. Perlakuan yang dikenakan yaitu (1) Jenis kemasan (A) terdiri dari 2 taraf yaitu kemasan karung plastik (Al) dan kemasan kotak karton (A2), (2) Suhu penyimpanan (B) terdiri dari 2 taraf yaitu suhu ruangan (B1) dan suhu dingin 10°C (B2), (3) Lama penyimpanan terdiri dari 6 taraf yaitu penyimpanan 2 hari (C1), 4 hari (C2), 6 hari (C3), 8 hari (C4), 10 hari (C5), dan 12 hari (C6). ...
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Judul: Identifikasi Molekuler Kompleks Spesies Himantura uarnak (Batoidea: Dasyatidae) di Indonesia.
Abstrak: Stingrays are one of the cartilaginous fish, apart of sharks and skates, and one of Indonesia's fishery resources. Almost of elasmobranch fishes are economically important fish. The refined products and live specimens of this fish are a lot of traded. Himantura uarnak, H. undulata and H. leoparda are stingray species in Himantura and Dasyatidae family, which are the most popular stingrays in Indonesia waters. The stingrays are major target species were used as a consumable product and trading products. Levels of species diversity of cartilaginous fish in Indonesia are very high, and also Indonesia is listed as one of the countries that use elasmobranch resources the highest in the world. Generally, this study aims to identify each species of H. uarnak species complex through molecular approaches. While specifically, this study aims to estimate the evolutionary process of species divergence and to determine the relationship between species. The methods were used in this study included field sampling, sample collection, and specimen identification, collection of genetic samples, analysis of genetic samples and data analysis . Size polymorphism nuclear DNA markers (intron EPIC) were used. Polymorphism alleles translated into genotypes and alleles frequency of five introns loci. The results of Bayesian analysis and Correspondence Analysis (CA) produced informative diagram of the population structure showed 4 different clusters. Cluster 1 and 4 were H. leoparda, Cluster 2 indicated as H. undulata and the Cluster 3 was H. uarnak. Cluster 1 was a variant of Cluster 4, in this time called as H. leoparda var.1. Separation of four clusters according to nuclear DNA need to be proved by mitochondria DNA maker by cytochrome c oxidase subunit I (COI) and cytochrome b (cyt b). Molecular approaches were using mitochondrial DNA gene cytochrome c oxidase subunit I (COI) and cytochrome b produced 4 main groups (Group I, II, III and IV). Both of these molecular approaches showed each individual of groups were in consistent clade and the main group. Hence the H. uarnak species complex in Indonesian waters were divided into 4 main groups, and each was a particular species. The Group I and IV were the two group species that have been released as H. leoparda and Group I was H. leoparda var. 1 identified as cryptic species. Group II was one individual who grouped as H. undulata. Group III was one of other group that identified as H. uarnak and in accordance with the morphological characteristic through spotting pettern. Morphological approach to identified the stingrays of Himantura uarnak species complex clearly less accurate than the molecular approaches. Morphological approach should not be used to identify a species complex in stingrays without helped by other approaches.
Keyword: Himantura uarnak species complex, intron EPIC, cyt b, COI, spotting pattern