<p style="text-align: justify;">Orange is one of the fruits that are widely consumed by the society, besides to the sweet taste and attractive appearance orange also has various benefits for the body such as vitamins and minerals. The famous and much-favored orange is a beneficial Sunkist orange can treat fever, treat infections, improve body immunity and decreasing the number of cholesterol. There are several ways of processing oranges such as orange juice and infused the water. The purpose of this study is to know the ratio of vitamin C content in the juice of Sunkist with infused water orange Sunkist. Types of research is analytic survey with comparative study approach. The research sample used was orange Sunkist which made two treatment that is the juice of Sunkist orange and infused water by using Iodimetry titration method. The results of the average vitamin C content in 10 samples of citrus Sunkist for 348,82 ppm and the average vitamin C level in 10 samples infused water of orange Sunkist equal to 67,59 ppm. Based on statistical test result using Independent Sample T-Test test stated that there is the difference of vitamin C content on freshly squeezed orange Sunkist with infused water of orange Sunkist with the value of significance 0.000. Suggested for further researcher can do research of vitamin C Infused water level by combining with other fruit

<p style="text-align: justify;">Staphylococcus aureus is a pathogenic bacterial that causes infectious disease and human poisoning through enterotoxin produced by the bacteria. Salt or sodium chloride is used by human for food preservation process because it can inhibit the growth of bacteria, especially Staphylococcus aureus. The purposes of the study were to determine the effect of NaCl in media on the growth of Staphylococcus aureus and determine the effective concentration of NaCl. The type of research used in this study was true experiment posttest only control group design. Samples were prepared in 5 NaCl concentrations, they were 10%, 15%, 20%, 25% dan 30%. The study conclusion was there were effects of NaCl addition to the media on the growth of Staphylococcus aureus with a significance value of 0.000 (<0.05). The effective NaCl concentration that inhibited the growth of Staphylococcus aureus is 15%. The advice for next study is to conduct similar studies with NaCl concentration of 10% - 15%.

Tofu is a food with high protein content and the moisture content reaches 85%, so that it knows can not last long. Manufacturers know still use formaldehyde as a preservative. Handling to reduce formaldehyde levels in the know are soaked in hot water and boiled in boiling water. The purpose of this study was to determine the ratio decreased levels of formaldehyde in the know are boiled and soaked in hot water out. This type of research is True Experiment with posttest study design Only Control Group Design. The population in this study is tofu containing formalin. Then examined by spectrophotometry of formaldehyde levels in most groups as a pretest sample, others are given treatment and formalin levels checked by spectrophotometry. Data were analyzed using the Mann-Whitney test. Results of this study the average levels of formaldehyde in the know before the treatment is 68.668 ppm. Decreased levels of formaldehyde in formalin know after boiling for 10 minutes was 64.77%. Decreased levels of formaldehyde in formalin know with the treatment of immersion in hot water for 10 minutes is 33.1%. Based on statistical tests that have been conducted, it was found a significant difference between the reduced levels of formaldehyde in formalin boiled out and the know formalin soaked in hot water with sig. 0,000. Boiling know formalin reduce levels of formaldehyde greater than soaking out in hot water.

Vitisvinifera is one of the perishable fruit and not durable when stored at room temperature. To maintain the levels of vitamin C wine then used treatment using calcium chloride (CaCl2). This study aims to determine the effect of treatment Calcium chloride (CaCl2) and duration of storage of the vitamin C content of Vitisvinifera This type of research uses experimental methods actual (true experiment) in the form of draft posttest only control group design. Wine and CaCl2 research materials. Data were obtained by performing assays using titration iodometry vitamin C in grapes. Results of statistical analysis to test multiple linear regression R2 values ​​obtained showed no effect of treatment 0.578 Calcium chloride (CaCl2) and storage time for blood levels of vitamin C Vitisvinifera. From Duncan statistical test obtained significant value for all subsets of the 2 treatment groups of more than 0.05, the most optimal levels of vitamin C in maintaining the Vitisvinifera is a CaCl2 concentration of 0.05 M for 4 days of storage. Therefore, this study suggested as alternative preservation for merchants and producers / grape growers in order to maintain the vitamin C content of wine so as to improve the quality and the quality of the fruit.

In its implementation, the Banjar Regency Government, in particular the Education and Culture Office, has not fully implemented the policy of the Minister of Education and Culture regarding Distance Learning, so it is interesting to examine some of the obstacles to its implementation, including in the context of the economic condition of the community. For this reason, it is essential to do this research, especially in high school (SMA), where many students already have a means of communication in the form of mobile phones. The main objective of the study is to describe the policy implementation model owned by the Education Office in Banjar Regency based on the economic conditions of the people in Banjar Regency and a description of the implementation of distance learning policies in terms of communication aspects, sources of resources, tendencies, and implementing bureaucracy. This study uses a qualitative research approach, namely research that seeks to understand and present the phenomena around teaching and learning activities in senior high schools in Banjar Regency, selected based on each school's public and private categories. The schools selected were High School 2 Martapura and High School Darul Hijrah Cindai Alus, Banjar Regency. To obtain accurate data and information, the selected research informants are the Head of the Banjar Regency Education Office, the Principal or his representative at SMA 2 Martapura, and SMA Darul Hijrah Cindai Alus Banjar. The school students are represented by five people from each school and the student's parents. The projected results of this study are expected to help enrich public policy knowledge, especially regarding policy implementation by the latest developments and conditions of technology development, information especially the Covid-19 pandemic era, and submitting criticism and suggestions, especially for the development of education in Banjar Regency.