Ambon bananas are one of several types of bananas exported from Lampung to other countries. Due to the distance and the length of time, the bananas undergo ripening before arriving at the destination country. The current research aims to increase the shelf life of bananas so that they are still fresh and fit for consumption by consumers. The experimental design used was a completely randomized design with ethylene absorbent formulation treatment, namely B0 = Control (0 g/kg ethylene absorbent material (KMnO4 + clay), B1 = 1 g/kg ethylene absorbent material (KMnO4 + clay), B2 = 2 g/kg ethylene absorbent material (KMnO4 + clay), and B3 = 3 g/kg ethylene absorbent material (KMnO4 + clay). Storage was performed at a temperature of 16−18°C for 24 days after treatment (DAT). During storage, samples were taken and observed for storage days 0, 4, 7, 10, 14, 17, 21, and 24. The data were statistically analyzed and continued with Duncan’s test at the 5% level. The control treatment (B0) of Ambon bananas can only be stored up to 10 DAT, while the B1 treatment is 14 DAT. For B2 treatment, Ambon bananas can be stored up to 21 DAT, and the best treatment is B3 (3 g/kg KMNO4 + clay), which can withstand banana ripeness until the end of the observation (24 DAT).

This study aimed to evaluate the effect of temperature and the type of immersion solution on the characteristics of the physical quality and tannin content of sorghum seeds. The material used were red sorghum seeds soaked for 24 hours in a neutral and alkaline solution at 30, 45, and 60°C. The parameters observed included moisture content, hardness, tannin content, and brightness of sorghum seeds which were then carried out statistical analysis and further tests with the DMRT method to determine the effect of treatment levels on parameter changes. The results showed that the increase in water content ranged from 28.22 - 32.16% with the highest final water content of 43.49% in the alkaline immersion treatment at 60°C. The value of decreasing hardness of seeds varied from 66.15 to 79.71% with the lowest hardness value of 11.10 Newton. Decreased levels of tannins by 46.98%; 68.13%; and 73.54% in the treatment of neutral solutions at temperature of 30, 45 and 60°C, and 52.30%; 70.74%; and 72.88% in the alkaline solution treatment at temperature of 30, 45 and 60°C. Soaking in the alkaline solution caused a decrease in the lowest brightness level of sorghum seeds compared to soaking at neutral pH at each temperature levels treatment.