Diversify products from Hibiscus sabdariffa L calyces Quang

Diversify products from Hibiscus sabdariffa L. calyces Quang Hong Luong Faculty of Food Science and Technology Nong Lam University, Ho Chi Minh City, Vietnam http: //www. hcmuaf. edu. vn

Introduction

Outline • Hibiscus sabdariffa (Roselle) statistics • Roselle production process • Potential in developing new products from roselle calyces • Conclusions

Roselle statistics (1) • There are more than 300 species of hibiscus around the world. – Hibiscus sabdariffa • belongs to the family Malvaceae • is widely distributed in tropical and subtropical regions China, India, Malaysia, Nigeria, Thailand, Taiwan, Vietnam, etc.

Roselle statistics (2) • Roselle is widely grown in different parts of Vietnam. – Ba Ria, Dong Nai, Song Be, Binh Thuan – The area is approximately 400 ha – Yield: ~ 400 – 800 dried roselle calyx/ha

Roselle hills Courtesy: http: //www. diadanh. vn

Roselle production process Blanching or Boiling Fresh calyx of Roselle Drying Boiled roselle calyx Roselle aqueous Dried Roselle calyx Products developing Jams, jellies, . Wine, Syrups Colorant Powder Roselle effervescent tablet Tea Further study

Potential in producing the roselle effervescent tablets • Experimental Objectives – Producing of roselle effervescent tablets from roselle powder in order to • Use the roselle aqueous solution • Diverse products from roselle calyces • Provide the vitamin C supplemented food • Experimental design – 9 treatments are generated from the type of mixture design

Roselle effervescent tablet (Quang H. Luong and Huyen T. T. Le, 2008)

Acknowledgements