International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 06 | Jun 2024
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Impact of Tray Dryer and Fluidized Bed Dryer on the Bioactive Compounds of Dalbergia sissoo Leaves Gediya V. K.1, Bhalodiya V. B.2, Akbari S. H.3 1M.Tech Scholar, Department of Food Process Engineering, College of Food Processing Technology and Bio Energy,
AAU, Anand
2Associate Professor and Head, Department of Food Process Engineering, College of Food Processing Technology
and Bio Energy, AAU, Anand
3Associate Professor and Head, Department of Food Plant Operations, College of Food Processing Technology and
Bio Energy, AAU, Anand ---------------------------------------------------------------------***--------------------------------------------------------------------uses. Traditionally, different parts of the tree, such as its Abstract - The use of natural resources, especially plants, for medicinal purposes has a rich history spanning thousands of years. Dalbergia sissoo, commonly known as Shisham, is a deciduous tree of significant botanical and cultural importance in the Indian subcontinent. The leaves of Dalbergia sissoo are traditionally used for treating various health conditions due to their rich bioactive compound content, including phenolics and flavonoids. However, high perishability of fresh leaves necessitates effective drying methods to preserve their medicinal properties. The presented study investigates the impacts of tray drying and fluidized bed drying on the bioactive compounds in Dalbergia sissoo leaves. Fluidized bed drying was found more effective in preserving phenolic and flavonoid contents as well as antioxidant activity, compared to tray drying. These findings highlight the importance of optimizing drying techniques to maintain the therapeutic properties of medicinal plants.
bark, seed oil, and leaves, have been utilized to treat a variety of health conditions, including skin ailments, heart issues, digestive disorders, and syphilis [2].
Key words: Dalbergia sissoo, Drying, Total Phenol, Flavonoid, Tray Dryer, Fluidized bed dryer
A major challenge in using Dalbergia sissoo leaves for medicinal purposes is their high perishability. Fresh leaves are susceptible to spoilage due to moisture, microbial growth, and inadequate storage conditions. To maintain their availability throughout the year and preserve their nutritional and bioactive properties, effective drying methods are crucial. Drying extends the shelf life of the leaves and also reduces their weight and volume, making transportation easier [4].
Phenolic compounds are vital for protecting plants from UV radiation, diseases, parasites, and predators, as well as enhancing their coloration. These compounds are present throughout all plant organs, making them a significant part of human nutrition. They are found in a variety of plant-based foods, including fruits, vegetables, cereals, and beverages like tea and coffee, where they greatly affect sensory properties. Among polyphenols, flavonoids are the most common in human diets. They possess anti-inflammatory and antiviral properties and are noted for their protective effects against cardiovascular diseases and cancer, earning them comparisons to essential vitamins [3].
1. INTRODUCTION The use of natural resources, especially plants, for medicinal purposes has a rich history spanning thousands of years. Ancient scriptures like the Rigveda, Charak Samhita, and Sushruta Samhita provide evidence of medicinal plants being employed to address various health issues. In contemporary times, particularly in areas with limited access to modern medical care, herbal medicines continue to play a crucial role in treating diverse illnesses and are an essential part of cultural traditions globally, including in India [1].
Conventional drying techniques, including shade drying and open sun drying, are commonly employed; However, they associated with significant drawbacks. These techniques frequently lead to the loss of volatile compounds and bioactive components due to exposure to strong solar radiation and potential contamination from environmental factors. On the contrary, modern drying techniques, such as forced convection drying, offers more regulated and efficient alternatives. Specifically, tray dryers and fluidized bed dryers improve heat and mass transfer, resulting in better preservation of bioactive compounds and minimizing contamination risks [5].
Dalbergia sissoo, commonly referred to as Shisham, is a deciduous tree in the Fabaceae family. It is indigenous to the Indian subcontinent and southern Iran. This tree holds considerable botanical and cultural significance, flourishing along riverbanks and at altitudes up to 1,300 meters. The leaves of Dalbergia sissoo are notable for their leathery texture and pinnately compound structure, making them valuable for various medicinal
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