Utilization of pineapple waste as by-product of pineapple fruit consumption such as peel, fruit eyes, and the core of the pineapple is still low. The middle part of the pineapple fruit called core has elongated shape, rather hard texture, and slightly of sweet and sour taste. Sweet and sour taste from the pineapple core had good nutritional content, so it enabling to be developed into more economically products, such as jelly candy. Chewy texture, transparent colors, sweetness, and fruity aroma as the jelly candy’s properties are strongly influenced by the gelling components and the temperature processing. The use of right combination between carrageenan concentration, pineapple core, and heating temperature can produced a good quality jelly candy. This research was carried out with Randomized Complete Block Design (RAK) method with two factors, i.e. variations of carrageenan (2%, 3% and 4% (b/v) and heating temperature (70°C, 80°C, 90°C). The aims of the research were to known characteristic of pineapple core jelly candy and determined the best formulation of it based on pishical, chemical and organoleptic characteristic. The result showed that the variation of 3% carrageenan and cooking temperature of 90°C was the best formulation of the pineapple core jelly candy with an effectiveness value of 0.66. It has texture value of 376.47 ± 0.71 g/mm; moisture content of 16.16 ± 0.37%; ash content of 1.26 ± 0.24%; vitamin C of 12.80 ± 0.69 mg/100g; reduction sugar of 11.90 ± 0.02%; and sucrose of 28.55 ± 0.24%. Based from organoleptic of jelly candy, the panelists like of texture (4.6), chewy texture (4.76) and rather like of the color (3.76), taste (4.28), aroma (4.04), overall organoleptic (4.12). Keywords: carrageenan, core of the pineapple, cooking temperature, organoleptic
This research aimed to observe S. cerevisiae and A. aceti induced fermentation of cocoa bean from Samarinda, Indonesia, in comparison to commercial cocoa bean in terms of microbial population, pH, total acids, total phenols, theobromine, antioxidant capacity, and FTIR profile. Cocoa beans were fermented with a boxed fermentation method resembling commercial plantation for four days at ambient box temperature (35-40°C). Four fermentation samples were produced which were spontaneous, 2% Saccharomyces cerevisiae, Acetobacter aceti, or mixed culture (S. cerevisiae and A. aceti) induced fermentations. Total Plate Count (TPC) and Total Yeast-Mold (TYM), pH, total phenol, theobromine, antioxidant activity, and FTIR analyses were performed according to the established method. There was no significant difference in the microbe population in all fermented cocoa. Mixed culture fermented cocoa had a slightly lower final pH. S. cerevisiae fermented cocoa produced the highest total phenol compared to the same compound content in other fermented cocoa. The mixed culture fermented cocoa had better theobromine content 162.3±22.6 ppm, antioxidant capacity 424.9±3.3 ppm, and the closest theobromine and caffeine identification zones to commercial cocoa samples. The use of mixed culture of S. cerevisiae and A. aceti is suggested as the better inoculum to ferment cocoa bean at local farms.
A specific 1,2-ot-mannosidase was isolated from A. phoenicis and used in the equilibrium-controlled synthesis of ctl---~2-1inked mannobiose and mannotriose. Yields of 22.33 % disaccharide, 8.21% trisaccharide and 2.74 % tetrasaccharide were obtained. Regioselectivity was absolute for the 1-->2 linkage.
Coffee powder as one of the processed products of the roasting coffee had a weakness that was giving a waste of brewing dreg. One of the efforts which could be done to reduce the brewing dreg was by making the dip coffee. Besides the dip coffee, the herbal coffee products such as the cinnamon was one of the diversification products of the processed coffee to obtain a new aroma and flavour and to obtain the healthy effect. This research aimed to know the dip cinnamon coffee characteristics by the roasting coffee difference level, the cinnamon powder concentration, and the treatment which resulted a good dip cinnamon coffee on its physical, chemical and organoleptic characteristics. This research used the Completely Randomized Design which consisted two factors; they were the roasting coffee level (light, medium, dark) and the cinnamon powder concentration (2%, 4%, 6%). Each treatment was used 3 repetitions. The physical and chemical characteristics test and the organoleptic preference were done on the dip cinnamon coffee product. The gained data of this research was calculated and analyzed using ANOVA and descriptive which were described in histogram. The research result showed that the best treatment from the chosen affectivity test result was the dark roasting coffee by 2% of the cinnamon powder concentration which resulted 26.13 of the lightness steeping value, 0.60% of sari content, 34.46 mg GAE/gram of the polyphenol total, 70.34% of antioxidant activity, color preference 7.08 (more prefer), aroma preference 7.04 (more prefer), taste preference 6.56 (less prefer), and whole preference 7 (more prefer).Keywords: Dip coffee; Cinnamon; Roasting level ABSTRAK Kopi bubuk sebagai hasil olahan kopi sangrai memiliki kelemahan yaitu masih meninggalkan ampas hasil penyeduhan. Upaya yang dapat dilakukan untuk mengurangi ampas hasil penyeduhan diantaranya dengan pembuatan kopi celup. Selain kopi celup, produk kopi herbal seperti penggunaan kayu manis juga merupakan salah satu diversifikasi produk olahan kopi untuk memperoleh aroma dan cita rasa baru serta memperoleh efek kesehatan. Penelitian ini bertujuan untuk mengetahui sifat-sifat kopi kayu manis celup dengan perbedaan tingkat penyangraian kopi dan konsentrasi bubuk kayu manis serta perlakuan yang menghasilkan kopi kayu manis celup dengan sifat fisik, kimia, dan organoleptik yang baik. Penelitian ini dirancang denganmenggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari dua faktor, yaitu tingkat penyangraian kopi (light, medium, dark) dan konsentrasi bubuk kayu manis (2%, 4%, 6%). Setiap perlakuan diulang sebanyak 3 kali. Pengujian karakteristik fisik dan kimia serta kesukaan organoleptik dilakukan terhadap produk kopi kayu manis celup. Data yang didapat dari hasil pengamatan diolah dan dianalisis secara ANOVA dan Deskriptif yang digambarkan dengan histogram. Hasil penelitian menunjukkan bahwa perlakuan terbaik dari hasil uji efektivitas yang terpilih adalah perlakuan penyangraian kopi dark dengan konsentrasi bubuk kayu manis 2% yang menghasilkan nilai lightness seduhan 26,13, kadar sari 0,60%, total polifenol 34,46 mg GAE/gram, aktivitas antioksidan 70,34%, kesukaan warna 7,08 (agak suka), kesukaan aroma 7,04 (agak suka), kesukaan rasa 6,56 (sedikit suka), dan kesukaan keseluruhan 7 (agak suka).Kata Kunci: kopi celup, kayu manis, tingkat penyangraian
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