The problem of the world energy crisis facing many countries, including Indonesia, can be overcome by using alternative energy sources to be used as fuel such as bioethanol. North Maluku is one of the regions in Indonesia that has a lot of agricultural products including waste. This agricultural waste contains a lot of carbohydrates which have the potential to be processed into bioethanol. This study aims to review research related to bioethanol production from agricultural waste and see the potential for bioethanol production from agricultural waste in North Maluku. This research method is written based on literature study. Sources of data in this study came from: 1). Related research journal. 2). Related institutions (BPS Maluku Utara). Data processing is carried out in calculating the potential bioethanol that can be produced. The results of the study showed that there were 190,276,660,746 tons of waste in North Maluku. If converted into bioethanol, there will be 10,630,272.41 kiloliters of bioethanol. Thus, North Maluku has the potential for bioethanol production.

Probiotic drink is a functional food that contains probiotic bacteria and can improve digestive health. This study aims to determine the best fermentation time to obtain pineapple skin probiotic drinks and to determine the effect of fermentation time on the chemical, microbiological and organoleptic characteristics of pineapple skin probiotic drinks. This research method used a simple one-factor Completely Randomized Design (CRD) consisting of 5 treatments and 3 replications so as to obtain 15 experimental units. The treatment consisted of 5 treatments, namely the duration of fermentation 24 hours, 48 hours, 72 hours, 96 hours, 120 hours. Parameters observed include chemical and microbiological properties, namely pH, vitamin C, ash content, lactic acid, total lactic acid bacteria, while for organoleptic properties include aroma, color and taste. Making a probiotic drink based on bogor pineapple skin using lactobacillus casei with different fermentation times has a significant effect on the parameters of pH, lactic acid, total lactic acid bacteria and has a significant effect on color organoleptic parameters. While the parameters of vitamin C, ash content, aroma and taste did not have a significant effect. Making a probiotic drink based on bogor pineapple skin using lactobacillus casei with different fermentation times, the best is in the 24-hour fermentation treatment (P1).