Judul: Aplikasi pati singkong sebagai bahan baku edible coating untuk memperpanjang umur simpan pisang cavendish (Musa cavendishii)
Abstrak: Bahan makanan pada umumnya sangat sensitif dan mudah mengalami penurunan kualitas karena faktor lingkungan, kimia, biokimia, dan mikrobiologi. Penurunan kualitas dan adanya proses hidup setelah panen tersebut dapat dipercepat dengan adanya oksigen, air, cahaya, dan temperatur. Salah satu cara untuk mencegah atau memperlambat fenomena tersebut adalah dengan pengemasan yang tepat. Edible coating berbasis pati singkong dapat diaplikasikan untuk melapisi buah pisang cavendish yang utuh sehingga dapat mempertahankan kecerahan warna dan dapat mempertahankan umur simpan. Lapisan film yang dibentuk memiliki pori-pori yang lebih kecil sehingga laju transmisi terhadap uap air dan gas juga rendah.
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Judul: Pengaruh Aplikasi Edible Coating dengan Penambahan Carboxymethyl Cellulose (CMC) pada Pisang Barangan (Musa acuminata L)
Abstrak: Pisang memiliki kandungan vitamin C yang cukup tinggi. Gas etilen yang membuat proses oksidasi menjadi cepat itu perlu dikontrol agar daya simpan dan umur buah bisa menjadi lebih lama hingga sampai ke tangan konsumen. Edible coating bertindak sebagai lapisan ekstra yang melapisi stomata yang mengarah pada pengurangan transpirasi. Untuk meningkatkan kekuatan serta perbaikan struktur permukaan edible coating yaitu ditambahkan CMC (Carboxymethyl Cellulose). Penelitian ini bertujuan mengetahui pengaruh penambahan CMC pada edible coating untuk melapisi bagian luar buah pisang Barangan (Musa acuminata L) terhadap kualitas buah. Pengamatan dilakukan di laboratorium pascapanen AGH dengan menerapkan metode rancangan acak lengkap dengan satu faktor pengamatan yaitu perlakuan konsentrasi CMC yang terdiri atas 4 taraf percobaan dan tiap taraf percobaan dilakukan sebanyak 5 ulangan dan setiap ulangan terdapat 3 satuan percobaan dengan total sampel 60 buah. Hasil Percobaan menunjukkan bahwa penambahan CMC dalam edible coating dapat memperpanjang umursimpan. Penggunaan edible coating dengan tambahan 1 g CMC dapat meningkatkan umur simpan buah selama 2 hari dibandingkan dengan kontrol. Edible coating dengan tambahan 3 g CMC mampu memperpanjang umur simpan hingga 17,04 hari, sedangkan edible coating dengan tambahan 5 g CMC memperpanjang umur simpan hingga 18,6 hari., Bananas have a relatively high content of vitamin C. Ethylene gas, which accelerates the oxidation process, needs to be controlled to extend the shelf life and freshness of the fruit until it reaches the hands of consumers. Edible coating acts as an extra layer that covers the stomata, leading to reduced transpiration. To enhance the strength and improve the surface structure of the edible coating, Carboxymethyl Cellulose (CMC) is added. This study aims to determine the effect of CMC addition to the edible coating for covering the outer part of Barangan bananas (Musa acuminata L) on the fruit quality. Observations were conducted in the post-harvest laboratory of AGH using a completely randomized design method with a single observational factor, namely the concentration of CMC treatment consisting of 4 experimental levels. Each experimental level was repeated 5 times, and each repetition consisted of 3 experimental units, resulting in a total sample of 60 fruits. The experimental results indicate that the addition of CMC in the edible coating can extend the storage time. The use of edible coating with an addition of 1 g CMC can increase the fruit's shelf life by 2 days compared to the control. Edible coating with an addition of 3 g CMC can extend the shelf life to 17.04 days, while edible coating with an addition of 5 g CMC can extend the shelf life to 18.6 days.
Keyword: CMC, edible coating, shelf life

Judul: 3D model reconstruction using aerial photo to measure object height
Abstrak: 3D reconstruction, especially for height extraction, using digital aerial photos taken from a non-metric camera and Unmanned Aerial Vehicle (UAV) is a challenging study. The purposes of the study are to determine the factors affect the accuracy of an object’s height reveal from a 3D model and establish procedures to deliver the optimal result. Two or more overlapping aerial photos can be constructed into the 3D model by applying the principles of collinearity and epipolar geometry using 3D reconstruction algorithm. Due to the instability of non-metric digital camera, the camera must be calibrated before 3D reconstruction is processed, in that way the quality of spatial extraction can be then measured. The study is conducted using 24 megapixels resolution Sony NEX7 digital camera and Hexacopter UAV. UAV was flown to a height of 50 m, 60 m and 70 m and placed at a certain position in order to get some height variations of camera. Camera Calibration Toolbox is utilized to calculate intrinsik parameters of the camera and a specific program is developed using MATLAB in order to build the 3D model and to obtain the object’s height. The result validation is done by comparing the height from 3D model with that one measured using Electronic Total Station. The accuracy of the object’s height up to 1 mm successfully achieved, with the largest height prediction error reaches 15.2 cm at 70 m flying height above ground level and average percentage error 4.07 for 20 objects.
Keyword: 3D reconstruction, collinearity, epipolar geometry, UAV