Kulit lidah buaya merupakan bagian terluar yang banyak mengandung senyawasenyawa penting yang memiliki banyak fungsi dan diantaranya bersifat thermosensitif, sehingga diperlukan perlakuan yang tepat untuk memperoleh kualitas yang diinginkan. Senyawa penting kulit lidah buaya dapat diisolasi dengan proses ekstraksi. Suhu dan waktu ekstraksi yang digunakan dalam penelitian ini bervariasi yaitu suhu 50 o C,60 o C,70 o C, 80 o C dan waktu 10, 20 dan 30 menit dan menggunakan Rancangan Acak Lengkap. Variasi waktu dan suhu yang dilakukan memperoleh perlakuan terbaik yaitu pada perlakuan ekstraksi suhu 80 o C dan waktu 20 menit dengan hasil yang diperoleh aktivitas antioksidan 82,273%, total fenol 39,641 mg/g, vitamin C mg/g 153,640 mg/g, α-Tocoferol 159,220 mg/g; aloin 1,003 mg/g.

Implementation of development is certainly not far from the economic and social conditions of a nation or state. The success of economic growth is seen from the management factor carried out by the workforce. In this case, labor is a critical element in national development. This study takes a sample in the Government of West Java Province where operational variables are needed to analyze the problem. Descriptive and verification methods are used to explain each of the variables intended in this study, such as the number of manufacturing companies, the number of manufacturing production, and the human development index, which are aligned with the efforts of the West Java Provincial government to conduct job pieces of training, collect data on the working-age community, and continue to do so. They are seeking to attract investment in the industrial sector.

This Community Service Activity (PPM) collaborates with the Family Welfare Empowerment (PKK) of Rasau Jaya II Village as a partner. Partners have not used local food, namely sweet corn and sweet potatoes, into fermented beverage products that can increase immunity during the Covid-19 pandemic. It is necessary to increase the mindset of partners in utilizing local food ingredients as strategic potentials in an effort to increase family immunity, science and technology insights, skills and expertise of partners. The purpose of this PPM activity is to increase the insight, understanding, and awareness of partners regarding preventive efforts during the pandemic by increasing immunity through the consumption of local food. In addition, providing science and technology transfer in the form of appropriate technology (TTG) for processing fermented drinks as an effort to increase the added value of local food ingredients through diversification of their processed products. The implementation method in achieving goals and targets is in the form of socializing information on local potential, science and technology, and preventive efforts during the Covid-19 pandemic, transferring science and technology in the form of TTG training in processing fermented drinks, and conducting monitoring and evaluation. The results of the activity are increased insight and understanding of community groups about local food ingredients as a source of fibre, prebiotics, and probiotics; increasing awareness of community groups regarding preventive efforts during the pandemic by increasing immunity through consumption of local food; increased skills of community groups after simple TTG training in fermented beverage processing, and increasing the added value of local food ingredients through diversification of their processed products into fermented drinks.

This study was conducted to determine the relationship between learning concentration and student emotional maturity to mathematics learning outcomes of class X high school students. This study is an ex-post facto study with a research sample of 205 students selected using the stratified cluster random sampling technique. The instruments used are a learning concentration questionnaire, a student emotional maturity questionnaire and a mathematics learning outcomes test. The data from the study were analyzed by descriptive statistical analysis and inferential statistics with multiple linear regression analysis. The results showed that students' learning concentration and emotional maturity are in the high category and students' mathematics learning outcomes are in the moderate category, learning concentration and student emotional maturity have a joint relationship with mathematics learning outcomes of class X high school students, learning concentration has a positive relationship with mathematics learning outcomes of class X high school students, student emotional maturity has a positive relationship with mathematics learning outcomes  a student of class X high school.