Moisture dependent physical properties of lathyrus

Area of Science:

• Agricultural Engineering
• Food Science
• Material Science

Background:

• Understanding the physical properties of Lathyrus (grass pea) varieties is crucial for optimizing post-harvest handling and processing.
• Moisture content is a key factor influencing these properties, affecting storage, transportation, and product quality.

Purpose of the Study:

• To investigate the effect of varying moisture content on the physical properties of three Lathyrus varieties: NLK-40, Pratik, and Ratan.
• To establish relationships between moisture content and key physical parameters such as grain size, density, and shape.

Main Methods:

• Three Lathyrus varieties (NLK-40, Pratik, Ratan) were analyzed across a range of moisture contents (approximately 7-31% dry basis).
• Physical properties including grain size, thousand grain weight, angle of repose, volume, surface area, sphericity, porosity, bulk density, and true density were measured.
• Data analysis focused on identifying linear and non-linear trends with respect to moisture content.

Main Results:

• Grain size, thousand grain weight, grain volume, and surface area showed a linear increase with rising moisture content for all varieties.
• Bulk density and true density exhibited a linear decrease as moisture content increased.
• Sphericity and porosity initially increased with moisture content but then decreased at higher levels.

Conclusions:

• Moisture content is a critical determinant of Lathyrus physical properties, influencing handling and processing characteristics.
• The observed changes in density and dimensional properties necessitate adjustments in storage and processing equipment design based on moisture levels.
• These findings provide valuable data for the efficient and effective management of Lathyrus crops.