Fresh fruit juice was processed food was a part of healthy diet. Daily fresh juice consumption could improve health and prevent the occurrence of degenerative disease. Fresh juice were produce without any heat treatment which could allow natural microflora to growth. The aims of the research was to determine the microbiological contaminant of avocado street juice sold in Surakarta. Twenty five of samples were taken from 5 district. Samples were analyze for total viable aerobic count (TVAC), total coliform, total salmonella count, and total staphylococci. The results showed that microbiological contaminant of street avocado juice was extremely high. TVAC of avocado juice was 6.

Studi ini adalah hasil tracer study pada Program Studi (PS) Teknologi Pangan Universitas Terbuka tahun 2017-2020. Studi ini menggunakan metode kualitatif (qualitative research) melalui survei dan wawancara dengan variabel (1) Keterserapan alumni di dunia kerja; (2) Kontribusi perguruan tinggi terhadap tingkat komptensi yang dikuasai; (3) Penilaian alumni terhadap metode pembelajaran di PS Teknologi Pangan. Hasil tracer study menyatakan bahwa dari segi keterserapan alumni di dunia kerja, alumni PS Teknologi Pangan UT sebanyak 68% sudah bekerja dan sebanyak 70% sudah memperoleh pekerjaan sebelum masuk UT. Bidang pekerjaan alumni paling banyak di bidang swasta di sektor usaha makanan dan minuman. Kontribusi perguruan tinggi terhadap tingkat kompetensi yang dikuasai alumni yaitu lebih dari 50% alumni menyatakan perguruan tinggi berkontribusi sangat tinggi dan tinggi dalam pengetahuan di bidang ilmu teknologi pangan, kemampuan riset dan analisis, komunikasi, ketrampilan digital, manajemen waktu dan kemampuan dalam memegang tanggung jawab, serta soft skill. Penilaian alumni terhadap metode pembelajaran di PS Teknologi Pangan yaitu lebih dari 50% menyatakan sudah sangat baik dan baik dari tutorial online, praktikum, dan bahan ajar cetak. Masukan alumni untuk perbaikan layanan yaitu untuk tutorial online antara lain perlunya peningkatan server, tampilan yang lebih menarik, penambahan video dan studi kasus, serta tutor perlu lebih aktif memberikan umpan balik. Masukan mahasiswa untuk praktikum yaitu perlunya laboratorium sendiri yang dimiliki oleh UT, mata kuliah praktikum perlu diperbanyak, serta  integrasi antara mata kuliah praktikum dengan mata kuliah lainnya. Masukan untuk bahan ajar cetak adalah perlu dilakukan pembaharuan materi yang mengikuti dengan perkembangan teknologi dan ilmu pengetahuan. Tracer study in the Food Technology Study Program of the Open University conducted in 2017-2020. This study uses qualitative methods (qualitative research) through surveys and interviews with variables (1) Absorption of alumni in the world of work; (2) Contribution of higher education to the competency level mastered; (3) Evaluation of alumni of learning methods in the Food Technology Study Program. The results of the tracer study stated that in terms of alumni absorption in the world of work, 68% of UT Food Technology PS alumni were already working and as many as 70% had reached a job before entering UT. Most alumni work in the private sector in the food and beverage business sector. The contribution of higher education to the level of competence controlled by alumni is more than 50% of alumni who state that universities contribute very high and high in knowledge in the field of food technology, research and analysis skills, communication, digital skills, time management and the ability to hold responsibility , also soft skills. The alumni assessment of the learning methods at the Food Technology Study Program, namely more than 50% stated that it was very good and good from online tutorials, practicum, and printed teaching materials. Alumni input for service improvements, namely for online tutorials, including the need for server upgrades, a more attractive display, adding videos and case studies, and tutors need to be more active in providing feedback. Student input for practicum is the need for UT's own laboratory, practicum courses that need to be reproduced, and integration between practicum courses with other courses. The input for printed teaching materials is that it is necessary to update the material that follows the development of technology and science.

Previous research has identified the food safety aspects of the fresh fruit juices sold in Surakarta. The results showed that the level of microbiological contamination in fresh fruit juice was very high and it was not safe for consumption. This study aims to test the ability of mint leaves (Menta piperita) as a natural antimicrobial source to suppress the growth of pathogens in avocado juice. Mint leaves contain natural antimicrobial compounds in the form of menthol, menthone, menthophuran, and methyl acetate. The study used a factorial completely randomized design with 2 factors, namely the length of incubation time and the addition of mint leaves stored in standard room temperature and refrigerant. The incubation times were 0, 2, 4, and 6 hours. The results showed that mint leaves were able to suppress the number of Staphylococci, reaching the lowest number, namely 2.19 ± 0.00 log CFU / ml. Total Salmonella-Shigella was not detected by adding mint leaves and incubation for 6 hours at cold temperature. The total coliform count gave the final result with the lowest log colony count value in avocado juice and cold incubation temperature of 3.58 ± 0.43. The use of mint leaves as a natural antimicrobial in food is not yet effective, so it needs to be studied more about the use of its essential oil or needs to be explored for further effective methods.

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Cilok was a traditional food originating from Bandung and comes from the abbreviation of "Aci dicolok". As the name implies, a snack made from tapioca flour mixed with condiment and sometime using meat or fish fillet. It was tasty and chewy. Cilok has quietly different from meatball because meatball using wheat flour. Cilok usually consumed using a sauce made from crushed peanuts, sugars, salt, mixed with chili sauce, tomato sauce, or soy sauce which can be modified as you want. Recently, cilok sales in the city of Surakarta have become increasingly popular. In almost every corner we can find cilok sellers. This study aims to determine the level of microbiological contamination found in cilok and peanut sauce in Surakarta. The research method used was simple random sampling method from 5 districts in Surakarta. The number of contaminants was calculated by the direct plate count method. The tests performed were to determine the total plate count (ALT), total Staphylococci, total Salmonella shigella, and total coliforms of the cilok and also for the sauce. As for the cilok sample, the average log value of ALT was 6.57 - 7.97 log CFU / g, total Staphylococci 4.57 - 4.96 log CFU / g, Salmonella shigella was 0.53 - 1.23 log CFU / g, and total coliforms 1.00 - 2.26 log CFU / g. Peanut sauce sample, the average log value of ALT was 7.40 - 8.18 log CFU / g, total staphylococci 5.84 - 6.68 log CFU / g, total Salmonella shigella was 2.24 - 3.23 log CFU / g, and Escherichia coli 2.35 - 5.79 log CFU / g. From the test results of the peanut sauce and peanut sauce samples, it can be concluded that the peanut sauce and peanut sauce sold in Surakarta are still not suitable for consumption.