Huan Sun, a DFM student, recently published her M.Sc. thesis titled “Nutritional Composition of Dried Fishes from Bangladesh and Functional Properties of their Protein Isolates.” Her research provides valuable insights into the nutritional profile and potential applications of dried fish in Bangladesh. Huan conducted her Master’s research under the supervision of Dr. Rotimi Aluko from the Department of Food and Human Nutritional Sciences at the University of Manitoba. Her thesis examining committee included Dr. Derek Johnson from the Department of Anthropology and Dr. Alphonsus Utioh from Food and Human Nutritional Sciences. Huan successfully defended her thesis on May 8, 2024.
Huan’s research investigated seven different species of dried fish collected from Cox’s Bazar, Dhaka, Mymensingh, and Sylhet. Key findings reveal that the White Sardine (Escualosa thoracata) and Ganges River Sprat (Corica soborna) are promising protein sources, containing over 75% protein and high levels of essential amino acids, including beneficial omega-3 fatty acids such as EPA and DHA. Both species are also rich in vitamin B12, making them excellent options for addressing nutritional deficiencies. However, challenges such as elevated heavy metal levels and high cholesterol content in some species—particularly the Ganges River Sprat—raise concerns about consumer safety. In her research, Huan also explored the functional properties of dried fish protein isolates (DFPIs) from Dhaka. The study found that these isolates exhibited excellent solubility, heat stability, and emulsifying properties, indicating their potential use as food ingredients in the industry.
This thesis research is a significant contribution to DFM’s Working Group 2 (Food and Nutrition Security) and supports the ongoing Phase 2 efforts of the DFM Bangladesh team to address dried fish contamination and safety challenges through public policy advocacy. Additionally, the findings add to the growing body of evidence regarding the potential of dried fish to enhance nutrition security in Bangladesh, where it is a vital part of the diet.
We asked Huan about her experience conducting this research as part of the DFM project and her thoughts on its impact. Here’s what she shared:
“My hometown is a small inland city. Being far from the ocean, I’ve had very few opportunities to learn about dried fish. Working with Dried Fish Matters has given me a new understanding of the importance of dried fish beyond my own culture. There are many types of dried fish, and their preparation and consumption exhibit both commonalities and unique characteristics across different cultures. As I’ve learned more about dried fish, I’ve come to see that it is not only a representation of distinct civilizations but also a crucial solution to the ‘invisible hunger’ prevalent among the poor.
A significant number of consumers in developing regions like South Asia, India, and Africa rely on dried fish, especially poorer populations. The iron, calcium, zinc, and essential amino acids found in dried fish are nutrients they urgently need. However, the controversial production environment raises concerns about food safety. Water pollution, pests, microbial infections, and the misuse of veterinary drugs overshadow dried fish’s reputation as a nutritious food. My thesis addresses these concerns by investigating the nutritional value and pollutant composition of dried fish. As a food science student with a sense of social responsibility, I hope my research contributes to finding solutions for safe and scientifically-based nourishment for disadvantaged communities.”
Huan will remain an integral part of the Dried Fish Matters project as she embarks on her PhD under the supervision of Dr. Rotimi Aluko at the University of Manitoba. Her Master’s thesis, along with her ongoing PhD research, plays a crucial role in advancing DFM’s mission to assess the nutritional value of dried fish and elevate its importance in promoting nutritional security and well-being.
Huan’s thesis has been published and is available here.
