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This research aims to address the environmental pollution issue caused by plastic waste in Bantan Timur Village, Medan Tembung Subdistrict, by transforming plastic waste into a valuable product, namely seat cushions. The problem of waste has become a global challenge, especially with the increasing population and activities. The rise in waste leads to negative impacts on the environment, such as disease outbreaks, floods, and a decline in aesthetic value. In this context, this article proposes a solution through the Research and Development (R&D) research method to produce seat cushions from plastic waste. Plastic waste is processed through steps of washing, drying, cutting, and packaging. The product is expected to raise awareness about proper waste management, reduce environmental pollution, and have a positive economic impact. Making seat cushions from plastic waste serves as a practical example of sustainable waste management, involving ecological and social aspects. The results are anticipated to inspire similar efforts in other regions, creating creative and sustainable solutions to address environmental pollution issues.

The pellet molding machine has high efficiency to make it easier to process animal feed pellets. The pellet processing process requires a series of activities such as grinding, mixing, pelleting and drying. Therefore, research was carried out to identify the effect of convenience on the level of effectiveness of using an animal feed pellet printing machine. The method used in this research is a quantitative method by distributing questionnaires via the Google Form platform. Validity tests, reliability tests and simple regression analysis are used to analyze the data obtained from filling out the questionnaire

The main objective of this research is to find out the role of women in the people's coffee management system in North Sumatra. The approach in this research is qualitative. The population of this study comes from 5 city districts in North Sumatra including karo, dairi, humbang hasundutan, simalungun, north tapanuli and mandailing natal districts. The sampling technique uses incidental sampling, namely any female farmer who is found in the field and meets the criteria of the researcher, the sampling number used is 60 farmers. This research data analysis technique uses descriptive analysis. The results of data analysis show that in the management of smallholder coffee plantations in North Sumatra, women take a considerable share. Where 8 out of 10 jobs in coffee management are done by women, while 2 more things are done by men. The roles played by women in coffee management are Land Preparation, Seed Planting, Plant Maintenance, Fruit Picking, Fruit Processing, Seed Drying, Seed Cleaning, Storage, and Distribution, while Pest and Disease Control and seed Grinding are carried out by men.

The purpose of this study was to determine the effect of pressing fish waste flour in the Christmas II market on protein, fat, and energy content. The research method used in this study was a completely randomized design (CRD), which consisted of 4 treatments and 5 replications. The following were performed: P0: Fish waste flour from poultry; P1: Fish waste flour is dried under the sun; P2: Fish waste flour is pressed and dried in the sun; P3: Fish waste flour is pressed in the oven with a temperature of 400C. The research parameters are the content of crude protein, crude fat, and gross energy. The results of this study showed that the effect of pressing fish waste flour on the II Natal market showed that the highest crude protein content was in the P0 treatment (fish waste flour from poultry); Crude fat and gross energy were highest in treatment P1 (fish waste flour dried under the sun). The results of analysis of crude protein in samples of fish meal treatment, it was found that the one with the highest crude protein content was treatment P0 (fish waste flour from poultry) which was 53.07% then treatment P2 (pressed fish waste flour dried under the sun) with an average 43.31% and P3 (pressed fish waste flour in the oven with a temperature of 400C) of 42.66% and the one with the lowest crude protein content was 41.81%, namely treatment P1 (waste fish flour dried under the sun). The lowest percentage of crude fat content was found in treatment P0 (fish waste flour from poultry) which was 0.16% and the highest was in treatment P1 (dried fish waste flour in the sun) which was 2.93% and the highest gross energy was 2,852.46 cal /100g in treatment P1 (fish waste flour drying under the sun), and the lowest was 2,252.63 cal/100g in treatment P0 (fish waste flour from poultry). The results of the analysis of variance for the content of crude protein, crude fat, and gross energy content showed very significant differences (P<0.01) in this study. The results of the test of variance which were very significantly different were then tested further using the honest significant difference (BNJ) follow-up test according to the respective coefficient of diversity.

Rice is the main product obtained from grain produced by the rice plant (Oryza sativa) whose entire layer has been peeled off and the bran layer has been separated in the form of head rice, whole rice grains, broken rice, and groats. There are several types of pigmented rice such as brown rice, black rice and black glutinous rice. These kinds of rice have not been utilized optimally so that a processing process is needed to increase the economic value of the colored rice. One of the processing is made as flour so that it is durable and easy to distribute and flour can be used as a food processing material that is practical, easy and durable. One of the processed rice is rice flour. Colored rice flour is the result of processing brown rice, black rice and black glutinous rice by milling or flouring. This study aims to determine the optimal temperature in the manufacture of colored rice flour in order to obtain colored rice flour which has high antioxidant activity and high anthocyanins. The result of flouring is in the form of very fine grains. Flour has a low water content so it is more durable and long lasting. In order to reduce the moisture content, drying is carried out. The study used a completely randomized design (RAL) consisting of 2 factors. The first factor was the type of colored rice, while the second factor was the drying temperature of rice flour. The optimal treatment results were a combination of black glutinous rice flour treatment and a drying temperature of 45°C for 60 minutes, the following results were obtained: water content 7.44%, antioxidant activity by DPPH method 69.89%, antioxidant activity by FRAP method 81.35%, yield 25.29%, total phenol 175.85 mg/kg, and anthocyanin levels 327.10 ppm. Changes in temperature during the drying process of colored rice will affect the characteristics of the colored rice.

A peel-off gel mask is a cosmetic used for facial skin care in the form of a gel. Porang tuber extract peel-off gel mask (Amorphophallus muelleri) contains polyphenolic tannins which are efficacious as antioxidants. This study aims to determine the formulation of peel-off gel mask preparations of porang tuber extract and to determine the physical evaluation and antioxidant test of peel-off gel mask preparations of porang tuber extract using the DPPH method. Experimental formulation method with 7% polyvinyl alcohol (PVA) base. The active ingredient used is porang tuber extract with a concentration of 0.5% (F1), 1% (F2), and 1.5% (F3). Evaluation of the preparations carried out were organoleptic test, homogeneity test, pH test, drying preparation test, spreadability test, hedonic test and stability test. Based on the results of the stability test, it was shown that the peel-off gel mask preparation of porang tuber ethanol extract at various concentrations met the requirements for each test parameter. The antioxidant test results showed that F1 had an IC50 value of 48.75 ppm, F2 had an IC50 value of 43.18 ppm, and F3 had an IC50 value of 11.15 ppm which means that the three formulas have very strong antioxidant activity.

Chinese betel plant (Peperomia pellucida), an herbal plant belonging to the Piperaceae family, Chinese betel plant (Peperomia pellucida). Research Stages: sample collection, extract preparation, extract standardization, determination of non-specific parameters, phytochemical screening, preparation of test solutions, anti-inflammatory activity tests, treatment of test animals. The results of maceration were filtered using filter paper, then the entire filtrate was concentrated using a vacuum evaporator and water bath at 60℃ to obtain a thick extract. The yield of 96% ethanol extract from Chinese betel powder (Peperomia pellucida) obtained was 4.531%. Based on the results, it has non-specific characteristics, namely drying shrinkage of 9.26%, ash content of 7.9% and water content of 4.15%. Phytochemical screening the compound tested was positive, A dose of 150 mg/kgBB is also an effective dose in inhibiting the formation of edema seen from the effect it gives is stable and has the highest percentage of edema inhibition compared to other doses, which is 34,35%.

 Purslane plant is an herbal plant that is used as a medicine for skin infections. The author is interested in using the purslane plant as a peel-off mask to relieve acne nodules. The aim is to find out how to manufacture, sensory test results, public test results, and determine the effect of the purslane peel-off mask. This research was conducted with the methods of observation, experimentation, documentation, interviews, questionnaires, literature. The analysis used is descriptive qualitative analysis. The manufacture of purslane powder starts from the preparation of tools, materials, cleaning, drying, and refining. The manufacture of peel-off masks begins with the preparation of tools, materials, weighing, mixing, heating, and packaging. The feasibility of the product is tested based on color, aroma, texture, adhesion, product appearance. Product improvement is the addition of essence to the peel-off mask. In conclusion, according to the validator, the purslane plant powder is suitable for use in making peel-off masks and the results of the purslane peel-off mask facial treatment can relieve acne nodules. Suggestions for further researchers to change purslane plant powder into oil extract to maintain its content, BPOM test, and laboratory tests.

Many of the indonesians like to eat chips as everyday snacks, one of them is menjes chips. Menjes chips are beans made from bean curd. One of the SMEs that produces the menjes chips, namely Menjes Kyu that owned by Mrs. Chalimah. In the drying process, the cips are still done conventionally, namely by simply airing them out. This can affect the quality and flavor of chips because of the amount of oil it contains. The purpose of this activity was to add to the knowledge and skill involved in the use of oil stonework (spinner), which was useful in raising the quality and value of chips. The methods used are location surveys and the filling of questionnaires, toolmaking, and socializing of automatic oil slicers. The presence of an automatic oil slicer helps to enhance the quality, flavor, and storage power of processed chips.