Blending or mixing two or more of fruit juices is able to improve the quality of juices as
compared to single flavour. Pineapple and mango are among the popular tropical fruits in
Malaysia. Despite the massive production of pineapple in Malaysia, utilisation of pineapple as
a juice remains unpopular due to its exotic and strong flavour. Blending of pineapple with
mango is believed to overcome this issue. Nevertheless, suitable blending ratios play important role in the end product quality. The present work aims to determine the physicochemical
and nutritional quality of fresh blended pineapple-mango juice at different blending ratios for
25 days of refrigerated storage (4 ± 2°C). Physicochemical (colour, pH, titratable acidity, and
total soluble solid) and nutritional (vitamin C, total phenolic content, and total antioxidant
content) properties of fresh pineapple-mango juice blends of ratio 80% pineapple with 20%
mango (R80:20) and 50% pineapple with 50% mango (50:50) were determined throughout 25
days of storage. Pineapple-mango juice blends at blending ratio of R80:20 exhibited better
qualities in term of colour (lightness, chroma, hue, and browning index), chemical composition, and nutritional content.
This intended paper was done to give an early overview of the expected quality attributes of pineapple-mango juice blend treated with ultraviolet irradiation (UV-C) and thermal pasteurisation. Josapine pineapple (Ananas comosus L.) and Chokanan mango (Mangifera indica L.) is the popular tropical fruits in Malaysia with unique taste and constant availability. The blend of pineapple-mango juice predicted to have good overall quality attributes as proved by prior studies on orange-pineapple, lemon-melon, pineapple-carrot-orange and carrot-apple-banana juice blends. Conventional thermal pasteurisation widely implemented in juice industry but resulted in massive quality degradation. Thus, research on the non-thermal technology of UV-C widely studied to overcome such drawbacks of thermal pasteurisation. Effect of UV-C and thermal pasteurisation on pineapple-mango juice blend will be evaluated in terms of physicochemical (pH, titratable acidity, total soluble solids, turbidity and colour), antioxidant (ascorbic acid, total phenolics content and total antioxidant DPPH assay) and microbiological properties. UV-C treated pineapple-mango juice blend believed to have better retention of heat sensitive ascorbic acid and other quality compared heat pasteurised juice with minimal distinctive characteristic compared to fresh juice.