In the field of food, coffee waste begins to be developed by processing it as a beverage product. The skin of coffee fruit can also be processed as a food product, one of which is jelly candy. This study aims to study jelly candy making with the addition of gelatin as a gelling agent and the addition of lemon juice to produce coffee fruit skin jelly candy that has physicochemical and sensory characteristics that meet SNI quality requirements. The design used was factorial Completely Randomized Design consisting of 2 (two) factors. Factor I concentration of gelatin (G) and Factor II is the concentration of lemon water (L). Factor I consists of 4 levels, namely G1 = 10%, G2 = 15%, G3 = 20% and G4 = 25%, while factor II consists of 3 levels, namely L1 = 5%, L2 = 10% and L3 = 15%. Each treatment was repeated 2 times to obtain 24 experimental units.The concentration of gelatin and the concentration of lemon have a very significant effect on water content and pH value. The concentration of lemon has a significant effect on the value of hedonic organoleptic taste. Both interactions have a very significant effect on the value of organoleptic hedonic texture. The results of the analysis of coffee fruit peel jelly candy have an average moisture content of 21.25%, 0.95% ash content, pH 4.53, sensory hedonic color (3.50 neutral reception), aroma (3.48 neutral acceptance), taste (3.50 neutral acceptance), texture (3.59 likes reception).The results showed that 10% gelatin concentration and 10% lemon concentration (G1L2) were the best treatments obtained through the ranking test. The jelly candy produced has 21.32% moisture content characteristics, 1.55% ash content, pH 4.71, 14.09% antioxidant activity, 3.03 mg / 100g vitamin C levels, 3.55 sensory colors (likes) , aroma 3.45 (neutral), taste 3.48 (neutral) and texture 3.43 (neutral).
Abstrak: Buah srikaya merupakan buah daerah tropis yang pada saat ini masih sedikit pemanfaatannya dalam proses pengolahan. Buah srikaya juga mengandung gizi yang tinggi. Selama ini buah srikaya hanya diolah menjadi produk selai, dodol, sirup dan manisan. Selain itu, buah srikaya juga dapat diolah menjadi permen jelly. Penelitia bertujua untu mengetahui pengaru penambaha sukrosa pektin terhadap mutu fisikokimia permen jelly srikaya. Rancangan penelitian yang digunakan adalah rancanga aca lengka faktoria yang terdiri dari 2 (dua) faktor yaitu konsentrasi gula (G) dan konsentrasi pektin (P). Faktor I terdiri dari 3 taraf yaitu G1 = 30%, G2 = 45%, dan G3 = 60%, sedangkan faktor ke II terdiri dari tiga taraf yaitu P1 = 0,5%, P2 = 1% dan P3 = 1,5%. Ulangan dilakukan sebanyak 2 kali sehingga diperoleh 18 satuan percobaan. Hasil penelitian menunjukkan bahwa interaksi antara perlakuan berpengaruh sangat nyata terhadap kadar air dan kadar abu serta berpengaruh tidak nyata terhadap vitamin C, pH, dan total padatan terlarut. Hasil analisis permen jelly srikaya menghasilkan rata-rata kadar air 20,96%, kadar abu 5,58%. Berdasarkan perlakuan terbaik dengan metode rangking dengan konsentrasi gula 60% dan pektin 1% diperoleh kadar abu sebesar 4,072%, kadar air sebesar 21,37%, pH 4,04, vitamin C sebesar 43,12 mg/100g dan total padatan terlarut sebesar 2,90 0BrixThe Effect Of Addition Of Sucrose and Pectin To The Q uality Of Candy Chemicals Of Srikaya Fruit Jelly ( Annona Squamosa L)1 Abstract: Srikaya is a tropical fruit which is processing. In limited why srikaya fruit srikaya contains high nutrition. But has srikaya fruit is only processed into jam, dodol, syrup and sweets. In addition, srikaya fruit can also currently be processed into jelly candy. This study aims to determine the effect of adding sucrose and pectin to chemical quality of srikaya jelly candy. The research was condusted usis factorial complete randomized design consisting of 2 (two) factors. The first factor is the concentration of sugar (G) and the second factor the concentration of pectin (P). Factor I consists of 3 levels, namely G1 = 30%, G2 = 45%, and G3 = 60%, while the second factor consists of three levels, namely P1 = 0.5%, P2 = 1%, and P3 = 1.5 %. The repetition of this expenriment was done twice so that 18 units were obtained and followed with least significance different test. The result shomed that the interaction between treatments had a very significant effect on water content and ash content. The results of the analysis of jelly sugar candy produced an average water content of 20.96%, ash content of 5.580%.
The use of colorants in the dried noodle manufactures is an effort of product diversification. Besides of being used as a natural coloring agent, this peel extract is also used to improve nutritional value of the expected product. The purpose of this study was to determine the effect of red dragon fruit peel extract on the physical quality of dried noodle. The study was conducted by using Completely Randomized Design (CRD) method with one factor, namely concentration of red dragon fruit peel extract (N1 = 10 ml, N2 = 15 ml, N3 = 20 ml, N4 = 25 ml, N5 = 30 ml). The observations of its physical quality consisted of water absorption, solid loss during cooking, and organoleptic tests (aroma and color). The best quality of dried noodle was obtained by using 30 ml red dragon fruit peel extract (N5) with physical properties, namely DSA levels of 351.92%, solid loss during cooking 4.78%, aroma 3.79 (like) and color 3.89 (like).
Guava is perishable fruit and has relatively short shelf life, so that many of these fruits are damaged and eventually discarded. Guava can be processed into fruit leather, a thin and elastic sheet properties, which is an alternative processing method to extend shelf life of guava. Nevertheless, the pectin content in guava was apparently not enough to desired plasticity properties in fruit leather, therefore it is necessary to add arabic gum to improve the texture and sucrose to improve the taste. This study aims to determine the effect of the addition of sucrose and gum arabic on the physicochemical characteristics and consumer acceptance of fruit leather. This study was conducted using a factorial Completely Randomized Design with two factors, concentration of gum arabic stabilizer with 3 levels (0,3%, 0,6% and 0,9%) and the concentration of sucrose with 3 levels (5%, 10% and 15%). The average value of each parameter were pH 4.93; total dissolved solids 68.27; ascorbic acid 97.04 mg/100 gr; water content 10.38%; total acid 0.39%; ash content 1.19%; antioxidant activity 49.67%, and organoleptic value of colour, aroma, taste and texture were 2.78 (neutral), 2.64 (neutral), 2.44 (dislike) and 2.75 (neutral). Based on the ranking test, the best guava fruit leather with the addition of 0.9% gum arabic and 15% of sucrose.
A low-cost electronic nose (E-Nose) system using metal oxide sensor (MOS) was developed for Gayo arabica coffee roasting level. The developed electronic nose was designed to have a simple, rapid detection, as wells as provides reliable results. The E-Nose system is equipped with MOS sensors, sensor chamber, microcontroller, computer, and data acquisition system. The level of coffee roasting was monitored by read the data from the sensors continuously in real time every second. The sensor signals were recorded in Excel file using data acquisition system and analysed using both stepwise linear discrimination and k-nearest neighbor classifiers. A high percentage (91.67%) of accuracy was obtained using stepwise linear discrimination method. Furthermore, k-nearest neighbor classifier using city block distance demonstrated higher accuracy than stepwise linear discrimination classifier. The results showed that the electronic nose system has a potential for assessing Gayo arabica coffee roasting level. The study confirmed that the proposed electronic nose equipped with at least two MOS sensors was suitable for monitoring the level of coffee roasting level. The result could be used for evaluating other varieties of roasted coffee.
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