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Effect of carnauba coating and plastics wrapping on the physico-chemical and sensory characteristics of Rambootan

Paramawati, R., Nasution, D.A., Nurhasanah, A., Sulistyosari, N.
Acta horticulturae 2013 no.1011 pp. 111-118
Nephelium lappaceum, coatings, cold storage, color, controlled atmosphere storage, fruits, physicochemical properties, plastics, sensory evaluation, sensory properties, shelf life, sugar content, temperature, total soluble solids, trees, tropical and subtropical fruits, weight loss, Indonesia
As a tropical country, Indonesia has plenty kinds of tropical fruits. Rambootan (Nephelium lappaceum) is one of the tropical fruits that is specific to South-East Asian countries, especially Indonesia. However, since rambootan is perishable it cannot easily be sold to other provinces or abroad. Rambootan still performs active respiration although it has been picked up from the tree, which will affect the physico-chemical characteristic and the shelf life. The aim of this research was to prolong the shelf life of rambootan by introducing carnauba coating and plastics wrapping combined with low temperature and CAS (controlled atmosphere storage). Treated and untreated fruit as control were stored at low temperature within cold storage (15°C). The characteristics including weight loss, sugar content (TSS) and total acid (TA) were observed periodically until all fruits were rejected by panelists which evaluated the sensory attributes. The results noted that rambootan stored with controlled atmosphere (CAS, 3% O(2)-5% CO(2)) at 15°C had prolonged shelf life up to 11 days based on sensory analysis of panelists on hairy skin color as critical sensory attributed to rambootan. Carnauba coating was the best method that could reduce the weight loss, followed by treatment without coating/wrapping. Moreover, all treatments showed a similar increase in total soluble solid (TSS) and total acid (TA) parameter, and then decrease after a certain number of days of storage.