Pemanfaatan ampas batang kelapa sawit tua bebas nira sebagai bahan baku biopelet [Utilization of sap free old palm dregs as raw material for biopellets]

Palm oil plants, after reaching the end of their productive life, need to be rejuvenated with proper handling to prevent old palm trunks, which have been cut down, from being infested by beetles and the growth of Ganoderma sp. fungus, which can damage productive palm oil plants in the vicinity. The old oil palm trunks contain sap and have been utilized. The residue of the oil palm trunk after sap extraction contains carbon compounds that can be used as raw material for bio-pellets, representing an added value potential.  In this study, the composition of sap-free palm trunk dregs as raw material for bio pellets and the manufacture of bio pellets using sap-free palm dregs with a combination of particle size treatment and pressing pressure of T1M1 (0.4882 kg/cm2; 10 mesh); T1M2 (0.4882 kg/cm2; 20 mesh); T1M3 (0.4882 kg/cm2; 40 mesh); T2M1 (0.9764 kg/cm2; 10 mesh); T2M2 (0.9764 kg/cm2; 20 mesh); T2M3 (0.9764 kg/cm2; 40 mesh); T3M1 (1.4647 kg/cm2; 10 mesh); T3M2 (1.4647 kg/cm2; 20 mesh); and T3M3 (1.4647 kg/cm2; 40 mesh) using a hydraulic shop press to produce bio-pellets with a length of 2.5 cm and a diameter of 1.2 cm. The research used a descriptive method by presenting data as diagrams and tables. The results showed that the nira-free palm dregs used as raw material for the best bio-pellets in the T2M1 treatment (0.9764 kg/cm2; 10 mesh) contained 25.7% hemicellulose, 47.6% cellulose, and 7.2% lignin. The pellets produced contained 6.50% moisture content, 5.01% ash content, and 4416.93 cal/g heating value

Optimization of antioxidant activity and characterization of probiotic cascara beverage fermented using water kefir grain [Optimasi aktivitas antioksidan dan karakterisasi minuman probiotik cascara hasil fermentasi menggunakan bibit kefir air]

Cascara is a beverage derived from dried coffee cherry pulp, known to have good functional value but with a short shelf life. Fermentation is a technique that can enhance cascara beverages' shelf life and quality and their functional value due to the presence of probiotics and increased antioxidant compounds. The study aimed to optimize the fermentation conditions of cascara tea with water kefir seeds to improve the microbiota content of Lactobacillus sp, Bifidobacterium sp, and Saccharomyces cerevisiae and the antioxidant activity of the beverage. The method in this study used Response Surface Methodology (RSM) with a design selection of Central Composite Design (CCD), using two independent variables, namely fermentation time (X1) and Grain Concentration (X2), with a response of antioxidant activity (%). The findings indicated that a fermentation period of 48 hours and a grain concentration of 8.58% resulted in a probiotic drink exhibiting the maximum antioxidant activity of 65.53%. This optimum treatment resulted in a drink with IC50 antioxidant activity of 173.66 ppm, total phenol 477.24 mg GAE/mL, brightness value (L*) 30.69, redness (a*) 14.06, yellowness (b*) 29.57, pH 3.57, TPT 8.80 (ᵒBrix), viscosity 1.62 mPa.s, total LAB 8.54 log CFU/ml, and total yeast & mold 10.93  log CFU/ml

Karakteristik fisik dan komposisi kimia minyak kayu putih (Melaleuca cajuputi) asal Maluku dan Nusa Tenggara Barat [Physical characteristics and chemical composition of eucalyptus oil (Melaleuca cajuputi) from Maluku and West Nusa Tenggara]

Eucalyptus oil is an essential oil popular in Indonesia due to its ability to treat flatulence, induce a sense of warmth, and serve as an antibacterial, antiviral, antifungal, and aromatherapy agent. Melaleuca cajuputi is a species of eucalyptus plant that yields eucalyptus oil. This plant is commonly found in Central Maluku and West Nusa Tenggara. The distilling process of eucalyptus oil took four hours and involved using steam distillation. Several physical parameters, including cineole content, oil weight, specific gravity, optical rotation, and ethanol solubility, were utilized to evaluate the grade of the produced eucalyptus oil. The analysis of physical properties was conducted using SNI 06-3954-2006-compliant methodologies. The volatile compounds of eucalyptus oil were analyzed using the Gas Chromatography-Mass Spectrometry (GC-MS) technique. The test results indicated that the purity of eucalyptus oil from Maluku and NTB specifically met the requirements of SNI 06-3954-2006. GC-MS measurement revealed that eucalyptus oil from Maluku, with a yield of 1.42%, contained 26 chemical components, with 1.8-cineole comprising the highest percentage at 67.38%. In contrast, the yield of NTB eucalyptus oil was 1.84%, and it contained 21 volatile compounds of which the compound of 1.8 cineole made up 66.58% of the component compositio

Formulasi campuran olein minyak sawit untuk memproduksi shortening bebas lemak trans [Formulation of palm oil olein mixture to produce trans-fat-free shortening]

Shortening is a solid fat with the functional properties needed to produce a better texture and appearance for bakery or confectionery products, as well as frying and cooking media. Shortening is made by mixing two or more vegetable oils and then modifying them through a chemical or enzymatic interesterification process. In this research, the raw material for shortening was prepared from a mixture of 2 types of palm oil olein: refined olein (ROL) and mid olein (MOL). This research aimed to determine the optimal ROL and MOL mixture ratio in the chemical interesterification process, which produces shortening with the best quality and specifications. Five levels of ROL/MOL comparison consisting of (100/0), (95/5), (90/10), (85/15), and (80/20) were chemically inter-esterified using a sodium methoxide catalyst under a vacuum of 0.8 bar at a temperature of 110 oC and speed of 500 rpm. The results showed that the increase of MOL in the ROL/MOL formulation tends to increase the shortening melting point. However, increasing MOL did not change the iodine value, and all the ROL/MOL ratios produced shortening with specifications that met the SNI 3718:2018 requirement, and the best ROL/MOL ratio was 80/20

Application of ethylene adsorber by active charcoal for extending the banana shelf life [Penggunaan etilen adsorber yang terbuat dari arang aktif untuk memperpanjang umur simpan buah pisang]

Bananas is a tropical fruit that is quite popular because of their freshness and can be consumed directly or processed as a snack. Banana cultivation is increasing along with the increasing demand for bananas in the market. As a climacteric fruit, bananas ripen quickly so they spoil quickly and have a low shelf life. To extend shelf life, ethylene gas in the surrounding environment must be controlled, for example, using active packaging made from ethylene gas absorbent. Several studies used activated carbon from coconut shells, chitosan, and teak leaves as ethylene absorbent material to extend the shelf life of climacteric fruit (e.g., guava, avocado, and tomato) with various types of packaging and doses of absorbent materials. This study examines the shelf life of bananas packaged in active packaging that absorbs ethylene using activated charcoal from coconut shells. As a result, activated charcoal with the addition of KMnO4 to absorb ethylene could extend the shelf life of bananas for 6 days longer than without activated charcoal

Physicochemical and sensory analysis of instant corn porridge made from nixtamalized waxy corn [Analisis sifat fisikokimia dan sensoris bubur jagung instan berbahan dasar jagung pulut nikstamal]

Waxy corn is a commodity that can be developed into various food products; one is instant porridge, which only requires a short cooking preparation process because it has undergone previous processing. This research aimed to determine the physicochemical and sensory properties of instant porridge made from nixtamalized waxy corn. This research used a completely randomized factorial design (CRFD). The first factor was soaking time (30, 60, and 90 minutes), and the second was pregelatinization time (5, 10, and 15 minutes). The results showed that soaking and pregelatinization time significantly affected rehydration capacity, rehydration time, and viscosity. In contrast, the effect on syneresis and sensory properties was only affected by one of the factors. Instant nixtamalized corn porridge with a soaking time of 90 minutes and a pregelatinization time of 15 minutes was the best instant nixtamalized corn porridge with highest rehydration capacity (5.78 ml/g), calcium content (66.80 mg/L), and viscosity (3850 cP), smallest syneresis value (29.94%), and shortest rehydration time (2.19 minutes), with a neutral taste preference, while the panelists somewhat preferred color, texture, and aroma.

Implementation of the marketing mix and selection of chocholate marketing strategy priorities in a chocolate company in Bali [Implementasi marketing mix serta pemilihan prioritas strategi pemasaran cokelat pada perusahaan cokelat di Bali]

Chocolate is a processed product derived from cocoa beans that has undergone fermentation, drying, roasting, and grinding to produce high-quality cocoa powder. The processing of chocolate in a company involves many lengthy stages. Implementing a marketing mix is used as a technique to increase sales. The company needs to identify the superior products favored by consumers to develop priority marketing strategies. This study aims to analyze the application of the marketing mix in the chocolate industry and generate prioritized marketing strategies for the superior chocolate products produced by a company in Bali. The research method used is the Analytical Hierarchy Process (AHP). The results indicate that the marketing mix includes chocolate products such as chocolate cream, chocolate bars, and liquid chocolate. Product pricing depends on the form, with the most apparent pricing being for chocolate bars, calculated based on weight in grams. The production site is located at the main factory, which processes cocoa into chocolate cream, chocolate bars, and liquid chocolate, allowing consumers to experience the chocolate processing firsthand and try packaging chocolate at the factory. Chocolate promotion is continuously carried out through offline and online media, such as the company's website, which provides background information on chocolate production to the industry in Bali. The priority in chocolate marketing, based on the Analytical Hierarchy Process, is chocolate cream, followed by chocolate bars and liquid chocolate

Characteristics of liquid sugar from old oil palm trunk sap as affected by processing methods

The sap of old oil palm trunks contains appreciable sugar, but it has not been considered a potential sugar source. This study aimed to find the best method for producing oil palm liquid sugar that complies with the Indonesian National Standard (SNI) The non-factorial experiment was arranged in a Completely   Randomized Block Design (CRBD) with 6 replications. The treatments were a combination of lime-rotary vacuum evaporation (P1), without lime-vacuum rotary evaporation (P2), lime-atmospheric evaporation (P3); without lime-atmospheric evaporation (P4).  The parameters observed were pH, °brix, reducing sugar, color,  aroma, and overall acceptance. The data were subjected to ANOVA to determine the effects of the treatments and then, continued testing using HSD at α 0,05 for means separation.  The best treatment was found on liquid sugar processed using lime, and atmospheric evaporation with brix of 68.75%, pH of 5.4, moisture content of 17.74, ash content of 0.86%, reducing sugar of 44.31%, sensory score of color, aroma, and overall acceptance were f 3.42 (brownies yellow), 4.4 (like), and 4.04 (like).Keywords: lime, liquid sugar, old oil palm trunk, sensory, vacuum rotary evaporato

Optimization of the use of sorghum flour, peanuts, and moringa leaves in the making of high-protein gluten-free biscuits [Optimasi penggunaan tepung sorgum, kacang tanah dan daun kelor pada pembuatan biskuit non-gluten tinggi protein]

Protein is one of the macronutrients that the body needs in large quantities in addition to carbohydrates and fats. Eating high-protein biscuits can be one way to meet daily protein needs. Biscuits made from sorghum flour, peanuts, and Moringa leaves can produce non-gluten biscuits high in protein. This study aimed to determine the optimal balance of using sorghum flour, peanuts, and moringa leaves to produce high-protein biscuits with acceptable sensory values. The research method used is an experimental method with descriptive data analysis. The optimization method uses the Response Surface Methodology (RSM) experimental design with a central composite design (CCD). The best biscuit formula, as a result of the RSM experimental design optimization, has a protein nutrient content of 8.71%, 2.60% moisture content, 2.60% ash content, 32.99% fat content, and 53.85% carbohydrate content. The combination of using flour significantly affects the texture of the biscuits but does not significantly affect the color. Using composite flour consisting of 60% sorghum flour, 37% peanuts, and 4% moringa leaves to manufacture non-gluten biscuits can produce biscuits that are high in protein and have physicochemical properties and good sensory acceptability

Pengembangan roti berbahan pati jagung dengan modifikasi enzimatis & pemanas ohmik (Kajian: pengaruh variasi tegangan dan transglutaminase terhadap karakteristik produk) [Development of corn starch-based bread with enzymatic modification & ohmic heating: study effect of voltage and transglutaminase variations on product characteristics]

The main challenges in producing gluten-free bread are closely related to its development, texture, and nutrition. This research consisted of 2 stages.  Stage 1 was aimed to determine the effect of voltage variations (70 V, 80 V, 90 V, 100 V, 110 V, 120 V, and conventional baking as a control) on bread characteristics and process parameters. The experiment was arranged as non-factorial in a completely randomized design with 3 replications. The best results of the first stage were applied in stage 2, aimed to determine the effect of various concentrations of TGase (0, 0.5, 1, 1.5, 2, and 2.5%). The data were processed using analysis of variance, then further tested using Tukey's at the 5% level. The 120 V voltage gradient treatment was found to be the best treatment. It shows specific volume 3.17±0.17 cm3/g, baking loss 14.58±1.50%, brightness 50.97±3.27, hardness 3.76±0.11, cohesive 0.34±0.03, pore density 84±2.52. In addition, baking at a higher voltage level increased the temperature rate and electrical conductivity. The 120 V voltage treatment shows the time required to reach a maximum temperature of 97°C was 3 minutes 5 seconds, and an electrical conductivity value of 0.26-0.51 S/m. Based on the TGase treatment, it was found that when bread dough was applied with a higher TGase concentration, the specific volume, hardness, chewiness, resilience, cohesiveness and springiness, average pore size, and pore porosity of the bread increased