Effects of selected preservation techniques on the shelf-life of nipa sap

Nipa sap is a sweet, translucent sap from nipa palm (Nypa fruticans) tree. It is usually consumed as a refreshing beverage by local people. In Sarawak, Malaysia, nipa sap is a raw material to produce nipa sugar or gula apong, a semi-solid sweetener distinguished by its golden caramel colour. It is usually used for making traditional cakes, desserts, sauces and marinades. However, nipa sap usually spoils within 3 hours after collection due to natural fermentation. The present study aimed to...