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. 2023 Jan;60(1):404-418.
doi: 10.1007/s13197-022-05627-6. Epub 2022 Dec 3.

Destalking of dry red chillies (Capsicum annum L.) and its characterization

Kirti Jalgaonkar #  1   2 , Manoj Kumar Mahawar #  1   2 , Rajesh Kumar Vishwakarma  3
Affiliations

Destalking of dry red chillies (Capsicum annum L.) and its characterization

Kirti Jalgaonkar et al. J Food Sci Technol. 2023 Jan.

Abstract

Abstract: The prevalent manual destalking of dried red chillies is a labour-intensive, tedious, and unhealthy practice that can cause severe health ailments to the labourers. This study focuses on the design and fabrication of a mechanized system for removing stalks from dried chillies to reduce the drudgery involved in manual operation. The machine's primary components including hopper, rotating cylinder, triangular bridges, cutting blades, destalked chilli outlet, and stalk outlet were fabricated based on the design considerations and ease of operation. The machine was evaluated considering the independent parameters viz. feed rate, cylinder speed, and cylinder inclination for optimization of its performance using one-factor-at-a-time statistical design. Physical properties of chillies, destalking efficiency of the machine, and the effect of destalking on powder characteristics were determined. Optimal performance of the machine was achieved with the chillies having 8-10% (moisture), 6.5 kg/h (feed rate), 20 rpm (cylinder's speed), and 3° (cylinder's inclination) with destalking efficiency of 85-87%. The evaluation of powder characteristics also revealed the prominence of destalking with enhanced colour attributes. The developed machine is compact, efficient, economical, requires less labour and thereby it may encourage its adoption at the farmer's level and strengthening of the value chain of dried chillies.

Keywords: Colour; Cylinder inclination; Cylinder speed; Destalking; Feed rate.

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Conflict of interest statement

Conflict of interestThe authors declare that they don’t have any conflict of interest.

Figures

Fig. 1
Fig. 1
a Isometric view of the chilli destalking machine showing different components i.e. 1. Central shaft 2. Triangular projections 3. Cylinder having rectangular slots 4. Destalked chillies outlet 5. Cutting blades 6. Feed hopper 7. Machine cover 8. Machine frame 9. Motor 10. Power transmission system 11. Stalk collection chute 12. Stalk outlet 13. Starter 14. Vibrator. b Top (Plan) view of the chilli destalking machine (All dimensions are in mm). c Side view of the chilli destalking machine (All dimensions are in mm). d Front view of the chilli destalking machine (All dimensions are in mm)
Fig. 1
Fig. 1
a Isometric view of the chilli destalking machine showing different components i.e. 1. Central shaft 2. Triangular projections 3. Cylinder having rectangular slots 4. Destalked chillies outlet 5. Cutting blades 6. Feed hopper 7. Machine cover 8. Machine frame 9. Motor 10. Power transmission system 11. Stalk collection chute 12. Stalk outlet 13. Starter 14. Vibrator. b Top (Plan) view of the chilli destalking machine (All dimensions are in mm). c Side view of the chilli destalking machine (All dimensions are in mm). d Front view of the chilli destalking machine (All dimensions are in mm)
Fig. 2
Fig. 2
a Force deformation behavior of chilli stalks at different moisture content. b Representation of chillies and powder with differential stalk percentage
See this image and copyright information in PMC

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