Postharverst treatments of turmeric (Curcuma longa L.) in Cambodia - Impact on quality

Yin Molika, Bohuon Philippe, Avallone Sylvie, In Saraden, Weil Mathieu. 2022. Postharverst treatments of turmeric (Curcuma longa L.) in Cambodia - Impact on quality. Fruits, 77 (6) : 1-13.

https://doi.org/10.17660/th2022/026

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

Version publiée - Anglais
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Résumé : Introduction – A study on postharvest treatments of turmeric (Curcuma longa L.) was carried out in Cambodia with the aim of describing the local practices and measuring their impacts on the quality of the products. Materials and methods – Three case studies were observed, described and compared by using the 5M methodology. The impacts of sourcing and postharvest treatments on turmeric quality were assessed in samples collected in the case studies. Results and discussion – The local processing practices of turmeric were described in detail through the study of three turmeric production systems located in three areas (Siem Reap, Phnom Penh and Kampot), and known as the main turmeric processors in Cambodia. The essential oil, bioaccessible curcuminoids (both finger and mother) and total curcuminoids contents (mother only) of the rhizomes from different origins were different. The essential oil content of fingers was lower than that of mothers. The contents of total and bioaccessible curcuminoids also varied according to the rhizome parts analysed. After processing, no general rule was observed for essential oil and curcuminoid contents but the bioaccessible curcuminoids significantly decreased. Conclusion – Our findings clearly indicate that fresh turmeric from Siem Reap should be a good choice as it contains higher essential oil and equal curcuminoid contents compared to the turmerics from case study 2 (Phnom Penh). The postharvest treatment in Kampot had the shortest drying time and got the highest yield (16.2%), with the water content (about 6%) conforming with the specifications of the ISO standard 5562:1983.

Mots-clés Agrovoc : Curcuma longa

Mots-clés géographiques Agrovoc : Cambodge

Mots-clés libres : Bioaccessibility, Curcuminoids, Essential oil, Field study, Particle size

Classification Agris : Q02 - Traitement et conservation des produits alimentaires
Q04 - Composition des produits alimentaires

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

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