Main Article Content
Abstract
Abstract
Rambutan is still going on physiological processes after harvesting, that can cause diminishing fruit freshness and water loss. One of postharvest treatment that can help with physiological processes is by using coatings. The purpose of this study was to study the characteristics of films and droplets formed from various types and concentrations of solutions using the spray method. The type of pectin used was high methoxyl and low methoxyl citrus pectin with concentrations of 0.5% and 1%. Parameters test are droplet diameter, droplet density, film thickness and WVTR (Water Transmission Rate Transmission Rate). The results showed that the best pectin formulation using a low methoxyl orange pectin spray technique with a concentration of 1%. The resulting dropet size was 0.404±0.068 mm, droplet density 13.901-18.602, viscosity was 8.5875±0.043 mPas, film thickness was 0.10±0.138 mm, WVTR 5.08±0.172 g/m2/day and
respiration rate was 6.63 ml O2 /kg-hour. The observations on the 14th day of rambutan coating reduced water content by 13.19% with a weight loss of 12.76%, L value of 11.00, Hue value of 29.50, chroma value of 26.94, TPT value between 22.10-24.37 0Brix and consumer acceptance is above the consumer acceptance limit for all sensory test observation variables.
Abstrak
Buah rambutan setelah dipanen tetap melangsungkan proses fisiologi yang dapat menyebabkan berkurangnya kesegan buah dan kehilangan air. Salah satu perlakuan pascapanen yang dapat menghalangi
proses fisiologi adalah dengan menggunakan coating. Tujuan dari penelitian ini adalah untuk mempelajari karakteristik film dan droplet yang terbentuk dari berbagai jenis dan konsentrasi larutan pektin dengan
metode semprot. Jenis pektin yang digunakan adalah high metoxyl dan low metoxyl pektin jeruk dengan konsentrasi 0.5% and 1%. Parameter pengujian adalah diameter droplet, kerapatan droplet, ketebalan film
dan WVTR (Water Vapor Transmission Rate). Hasil penelitian menunjukkan bahwa formulasi larutan pektin terbaik dengan menggunakan teknik semprot adalah pektin jeruk low metoxyl dengan konsentrasi 1%. Ukuran dropet yang dihasilkan 0.404±0.068 mm, kerapatan 13.901-18.602 droplet, viskositas 8.5875±0.043 mPas, ketebalan film 0.10±0.138 mm, WVTR 5.08±0.172 g/m2/hari dan laju respirasi 6.63 ml O2/kg-jam. Hasil pengamatan pada hari ke-14 rambutan coating mengalami penurunan kadar air sebesar 13.19% dengan susut bobot 12.76%, nilai L 11.00, nilai Hue 29.50, nilai chroma 26.94, nilai TPT antara 22.10-24.37 0Brix dan penerimaan konsumen berada pada atas batas penerimaan konsumen untuk seluruh variabel
pengamatan uji sensori.
Keywords
Article Details
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References
- Ahmad, U. 2013. Teknologi Penanganan
- Pascapanen Buahan dan Sayuran. Yogyakarta
- (ID): Graha Ilmu.
- [AOAC] Association of Official Analytical Chemists.
- 2005. Moisture in Plants. Di dalam: Horwitz W,
- Latimer GW, editor. Official Methods of Analysis
- of AOAC International 18th Edition. Maryland
- (US): AOAC International.
- [BPS] Badan Pusat Statistik. 2015. Statistik
- Tanaman Buah-buahan dan Sayuran Tahunan
- Indonesia. BPS-Statistics Indonesia.
- Duan, J., R. Wu, B.C. Strik dan Y. Zhao. 2011.
- Effect of edible coatings on the quality of fresh
- blueberries (Duke and Elliott) under commercial
- storage conditions. Postharvest Biology and
- Technology 59:71-79.
- Gol, N.B., P.R. Patel, T.V. Rao, dan Ramana.
- 2013. Improvement of quality and shelf-life of
- strawberries with edible coatings enriched with
- chitosan. Postharvest Biology and Technology.
- 85:185-195.
- Guerreiro, A.C., C.M.L.Gago, M.L. Faleiro, M.G.C.
- Miguel, dan M.D.C. Antunes. 2015a. The
- use of polysaccharide-based edible coatings
- enriched with essential oils to improve shelflife
- of strawberries. Postharvest Biology and
- Technology. 110:51-60.
- Guerreiro, A.C., C.M.L. Gago, M.L. Faleiro, M.G.C.
- Miguel, dan M.D.C. Antunes. 2015b. Raspberry
- fresh fruit quality as affected by pectin- and
- alginate-based edible coatings enriched with
- essential oils. Scientia Horticulturae. 194:138-
- 146.
- Guillen, F., M.H. Diaz-Mula, P.J. Zapata, D. Valero,
- M. Serrano, S. Castillo, dan D. Martinez-
- Romero. 2013. Aloe arborescens and Aloe vera
- gels as coatings in delaying postharvest ripening
- in peach and plum fruit. Postharvest Biology and
- Technology. 83 : 54-57.
- Hamid, S., K.N. Sreenivas, T.H. Shankarappa,
- H.C. Krishna, dan G.A.P. Malliakrjuna. 2012.
- Physico-chemical and sensory parameters of
- muskmelon blended pomegranate squash and
- syrup. Environ Ecol. 30(3C):1052-1057.
- Henriette, A.M.C. de. 2014. Edible Coating.
- Advances in Fruit Processing Technologies.
- Iswahyudi. 2015. Perancangan kemasan
- transportasi buah jambu air (Syzygium Aqueum
- (Burn .F) Alston) Cv. Camplong. [Tesis]. Bogor
- (ID): Institut Pertanian Bogor.
- Landrigan, M., S.C. Morris dan B.W. McGlasson.
- 1996. Postharvest bowning of rambutan is a
- concequence of water loss. Journal of America
- Sosial Horticulture Science. 121:730-734.
- Maftoonazad, N. and H.S. Ramaswamy. 2008.
- Effect of pectin-based coating on the kinetics of
- quality change associated with stored avocados.
- Journal of food processing and preservation.
- 32:621-643.
- Marquez, G.R., P.D. Pierro, L. Mariniello, M.
- Esposito, C.V.L. Giosafatto, dan R. Porta.
- 2017. Fresh-cut fruit and vegetable coatings
- by transglutaminase cross-linked whey protein/
- pectin edible films. Food science and technology.
- 75:124-130.
- Martinez-Romero, D., F. Guillen, S. Casyillo,
- D. Vallero, dan M. Serrano. 2003. Modified
- atmosphere packaging maintains quality of table
- grapes. J. Food Sci. 68:1838-1842.
- Meindrawan, B., N.E. Suyatma, T.R. Muchtadi,
- dan E.S. Iriani. 2017. Aplikasi pelapis
- bionanokomposit berbasis karagenan untuk
- mempertahankan mutu buah mangga utuh.
- Jurnal Keteknikan Pertanian. 5(1):89-96.
- Mullen, W., J. Mcginn, M.E.J. Lean, M.R.
- Maclean, P. Gardner, G.G. Duthi, T. Yokota,
- dan A. Crozier. 2002. Ellagitannins, flavonoids
- and other phenolics in red raspberries and
- their contribution to antioxidant capacity and
- vasorelaxation properties. J. Agric. Food. Chem.
- 50:5191-5196.
- Nelinda. 2017. Kombinasi penanganan pasca
- panen dan kemasan untuk mempertahankan
- buah rambutan (Nephelium Lappeceum L.) pada
- sintem distribusi. [Tesis]. Bogor (ID): Institut
- Pertanian Bogor.
- Nikolova, K., I. Panchev, dan S. Sainov. 2005.
- Optical characteristics of biopolymer films from
- pectin and gelatin. Journal of Optoelectronics
- and Advanced Materials. 7(3):1439-1444.
- Nwaogu, U.C. dan N.S. Tiedje. 2011. Foundry
- coating technology. Scientific Research. 2:1143-
- 1160.
- Puetz, J., G. Gasparro, dan M.A. Aegerter. 2003.
- Liquid film spray deposition of transparent
- conducting oxide coatings. Thin solid films.
- 442:40-43.
- Sinaga L.L., S.M.S. Rejekina, dan M.S. Sinaga.
- 2013. Karakteristik Edible Film dari Ekstrak
- Kacang Kedelai dengan Penambahan Tepung
- Tapioka dan Gliserol sebagai Bahan Pengemas
- Makanan. Jurnal Teknik Kimia USU. 2:4. 12-16.
- Skurtys, O., C. Acevedo, F. Pedreschi, J. Enrione,
- F. Osorio, dan J.M. Aguilera. 2016. Food
- Hydrocolloid Edible Films and Coatings.
- Department of Food Science and Technology,
- Universitas de Santiago de Chile.
- Song, Z., H. Xiao, dan Y. Zhao. 2014. Hydrophobicmodified
- Nano-cellulose Fiber/PLA
- Biodegradable Composites for Lowering Water
- Vapor Transmission Rate (WVTR) of Paper.
- Carbohydrate Polymers. 111:442-448.
- Valero, D., M.Z. Diaz Mulla, P.J. Zapata, F. Guillen,
- D. Martinez-Romero, S. Castillo, dan M.
- Serrano. 2013. Effect of alginate edible coating
- on preserving fruit quality in four pulm curtivars
- during postharvest storage. Postharvest Biology
- and Technology. 77:1-6.
- Widjanarko, S.B., Y.C.H. Trisnawati, dan T. Susanto.
- 2000. Changes Respiration, Composition
- and Sensory Characteristics of Rambutan
- Packed with Plastic Films during Storage at
- Low Temperature. J of Agricultural Technology.
- 1(3):1-8.
- Winarno, F.G. 2002. Fisiologi Lepas Panen Produk
- Hortikultura. Bogor (ID): M-BRIO Press.
- Zhong, Y., G. Cavender, dan Y. Zhao. 2014.
- Investigation of Different Coating Aplication
- Methods on the Performance of Edible Coatings
- On Mozzarella Cheese. Food Science and
- Technology. 56:1-8.