Judul: Application of KMnO4-Based Ethylene Adsorber
Active Packaging in Cavendish Banana Distribution Packaging (Case Study of PT
XYZ)
Abstrak: Pisang merupakan salah satu produk holtikultura dengan potensi besar untuk dikembangkan dan memilki nilai ekonomis yang tinggi. Namun, pisang termasuk dalam buah klimakterik yang memiliki tingkat respirasi dan produksi etilen tinggi setelah masa panen sehingga berdampak pada umur simpan yang singkat. Hal ini menjadi tantangan signifikan bagi distributor, karena dapat menghambat jangkauan distribusi dan meningkatkan resiko kerusakan buah sebelum mencapai konsumen akhir. Upaya untuk mempertahankan kesegaran produk selama proses distribusi dan transportasi adalah dengan penggunaan teknologi kemasan aktif penjerap etilen. Bahan penjerap berbasis KMnO4 dengan media arang aktif bekerja dengan menjerap etilen yang diproduksi oleh buah dan mengoksidasi etilen sehingga menghambat proses kematangan. Bahan aktif perlu dikemas agar tidak terjadi kontak langsung dengan produk pangan karena bersifat toksik sehingga dapat merusak mutu buah. Penelitian bertujuan mengidentifikasi karakteristik material kemasan dengan pengujian sifat fisik dan mekanis meliputi gramatur, densitas, indeks tarik dan regangan putus, dan ketahanan gesek. Serta analisis fisik mutu buah untuk mengetahui pengaruh kemasan aktif selama penyimpanan yaitu dengan uji warna dan umur simpan berdasarkan tingkat kematangan. Hasil pengujian diperoleh bahwa material litho paper lebih baik sebagai wadah pembungkus untuk bahan penjerap etilen dibandingkan meltblown nonwoven karena memilki nilai kekuatan yang lebih tinggi, resiko kebocoran rendah, dan nilai estetika yang terjaga. Perlakuan terbaik dalam mempertahankan kualitas mutu buah yaitu diperoleh pada pengemasan litho paper dengan penyimpanan suhu optimal mampu memperlambat proses degreening dan meningkatkan umur simpan buah pisang Cavendish menjadi 6 hari penyimpanan dibandingkan kontrol hanya bertahan 3 hari., Bananas are one of the horticultural products with significant potential for development and high economic value. However, bananas are classified as climacteric fruits, which have high respiration rates and ethylene production after harvest, resulting in a short shelf life. This poses a significant challenge for distributors as it can hinder distribution reach and increase the risk of fruit damage before reaching the end consumer. Efforts to maintain product freshness during distribution and transportation involve the use of active packaging technology to absorb ethylene. KMnO4-based absorbents with activated carbon media work by adsorbing the ethylene produced by the fruit and oxidizing it, thereby inhibiting the ripening process. The active material needs to be packaged to prevent direct contact with food products due to its toxic nature, which could degrade fruit quality. The research aims to identify the characteristics of packaging materials by testing their physical and mechanical properties, including grammage, density, tensile strength and elongation at break, and friction resistance. Additionally, the physical quality of the fruit is analyzed to determine the impact of active packaging during storage through color testing and shelf life based on ripening stages. Test results indicate that litho paper is superior as a wrapping container for ethylene absorbents compared to meltblown nonwoven, due to its higher strength, lower risk of leakage, and maintained aesthetic value. The best treatment for preserving fruit quality is achieved with litho paper packaging under optimal storage conditions, which can delay the degreening process and extend the shelf life of Cavendish bananas to 6 days compared to the control, which only lasts 3 days.
Keyword: Kemasan aktif, Pisang Cavendish, umur simpan, penjerap etilen

Judul: Pembuatan Kemasan Aktif Penjerap Etilena Menggunakan Arang Aktif Sebagai Adsorben
Abstrak: Activated e-packaging can be used to keep the quality of horticultural products, one of the functions is for adsorbing moisture and ethylene on climacteric fruits, such as raja bulu (banana). The materials are used in making of activated e-packaging are recycled of paper and polystyrene. The characteristic of activated paper is tested by SNI ISO187: 2010, ISO 534:2011, ISO 536:2010, SNI 14-0437-1998, SNI 0436:2009, and morphology of activated membrane used scanning electron microscope and X-ray diffractometer. The activated paper is able to adsorb ethylene at 1.23-1.7 ppm and delay the maturity until 10 days, meanwhile the activated membrane is able to adsorb ethylene at 17.96-23.10 ppm and delay the maturity until 16 days. The bananas with paper and membrane activated e-packaging can not ripe perfectly, because of postharvest disease, meanwhile banana without treatment ripes perfectly at 8th day. In this research, activated e-packaging is made from activated carbon as adsorbent of ethylene. The source of activated carbon is the branch of Tectona grandis, which is activated at 800 °C for 120 minutes, The best activated carbon which appropriate with SNI 06-3730-95, is activated carbon which water vapor as activator.
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Judul: Query Expansion based on Bilingual Dictionary Using Conditional Probability
Abstrak: Query expansion is a technique that can be used to bridge vocabulary gaps between queries and documents in the collection. With query expansion, user will be helped to formulate queries well so that user will optimize the search result. In this study, the expansion term was resulted from the translation of bilingual dictionary. Subsequently, several terms of expansion were elected based on the closeness of its relationship with the original query. This research showed that conditional probability can be used to select expansion term in bilingual translation method query expansion. The result of 1000 documents was more than 97% relevan document can be retrieved by this system. The more expansion term used, the larger number relevan document was retrieved.
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