Drying kinetics, of pumpkin fruit slices as influenced by sulphiting, was investigated. Pumpkin fruits, were sulphited at 0, 1.0, 1.5, 2.0 and 2.5% to obtain 4 mm thick (P0, 4; P1, 4; P1.5 4; P2, 4; P2.5, 4 - and 5 mm samples (P0, 5; P1, 5; P1.5, 5; P2, 5; P2.5, 5 respectively). Samples were dried at 60, 65, 70, 75 and 80°C at an air velocity of 1.53 m/s. Drying was carried out to constant moisture. Samples were screened using descriptive sensory evaluation to obtain samples P1, 4 and P2, 5 each dried at 75°C as the best samples for 4 mm and 5 mm respectively. Drying curves, moisture diffusitivity, activation energy, drying time and rehydration capacity were determined. The drying curves obtained showed results for a short constant rate followed by a falling rate period. The effective moisture diffusivity varied from 6.235×10-11 to 12.808×10-11m2/s for the 4 mm and 9.046 x 10-11 to 21.330 x 10-11m2/s for the 5 mm samples. Activation energy obtained for P0, 4; P1, 4; P0, 5 and P2, 5 were 31.342, 32.292, 31.525 and 29.88 kJ/mol. respectively. Sulphiting reduced drying time at 1% level from 16.5 to 15.2 hours for the 4 mm sample and 17.8 to 16.9 hours at 2% level of sulphiting for the 5 mm. Sulphite treatment reduced rehydration capacity significantly at p>0.05. This study implies that the parameter which governed the internal transfer of moisture was moisture diffusion.
Published in | World Journal of Food Science and Technology (Volume 3, Issue 3) |
DOI | 10.11648/j.wjfst.20190303.11 |
Page(s) | 32-39 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2019. Published by Science Publishing Group |
Drying, Sulphite, Diffusitivity, Rehydration and Pumpkin
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APA Style
Comfort Mkpentseen Bunde-Tsegba, Charles Chukwuma Ariahu, Bibiana Dooshima Igbabul, Joseph Oneh Abu. (2019). Influence of Sulphite on the Drying Kinetics of Pumpkin Fruit Slices. World Journal of Food Science and Technology, 3(3), 32-39. https://doi.org/10.11648/j.wjfst.20190303.11
ACS Style
Comfort Mkpentseen Bunde-Tsegba; Charles Chukwuma Ariahu; Bibiana Dooshima Igbabul; Joseph Oneh Abu. Influence of Sulphite on the Drying Kinetics of Pumpkin Fruit Slices. World J. Food Sci. Technol. 2019, 3(3), 32-39. doi: 10.11648/j.wjfst.20190303.11
AMA Style
Comfort Mkpentseen Bunde-Tsegba, Charles Chukwuma Ariahu, Bibiana Dooshima Igbabul, Joseph Oneh Abu. Influence of Sulphite on the Drying Kinetics of Pumpkin Fruit Slices. World J Food Sci Technol. 2019;3(3):32-39. doi: 10.11648/j.wjfst.20190303.11
@article{10.11648/j.wjfst.20190303.11, author = {Comfort Mkpentseen Bunde-Tsegba and Charles Chukwuma Ariahu and Bibiana Dooshima Igbabul and Joseph Oneh Abu}, title = {Influence of Sulphite on the Drying Kinetics of Pumpkin Fruit Slices}, journal = {World Journal of Food Science and Technology}, volume = {3}, number = {3}, pages = {32-39}, doi = {10.11648/j.wjfst.20190303.11}, url = {https://doi.org/10.11648/j.wjfst.20190303.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjfst.20190303.11}, abstract = {Drying kinetics, of pumpkin fruit slices as influenced by sulphiting, was investigated. Pumpkin fruits, were sulphited at 0, 1.0, 1.5, 2.0 and 2.5% to obtain 4 mm thick (P0, 4; P1, 4; P1.5 4; P2, 4; P2.5, 4 - and 5 mm samples (P0, 5; P1, 5; P1.5, 5; P2, 5; P2.5, 5 respectively). Samples were dried at 60, 65, 70, 75 and 80°C at an air velocity of 1.53 m/s. Drying was carried out to constant moisture. Samples were screened using descriptive sensory evaluation to obtain samples P1, 4 and P2, 5 each dried at 75°C as the best samples for 4 mm and 5 mm respectively. Drying curves, moisture diffusitivity, activation energy, drying time and rehydration capacity were determined. The drying curves obtained showed results for a short constant rate followed by a falling rate period. The effective moisture diffusivity varied from 6.235×10-11 to 12.808×10-11m2/s for the 4 mm and 9.046 x 10-11 to 21.330 x 10-11m2/s for the 5 mm samples. Activation energy obtained for P0, 4; P1, 4; P0, 5 and P2, 5 were 31.342, 32.292, 31.525 and 29.88 kJ/mol. respectively. Sulphiting reduced drying time at 1% level from 16.5 to 15.2 hours for the 4 mm sample and 17.8 to 16.9 hours at 2% level of sulphiting for the 5 mm. Sulphite treatment reduced rehydration capacity significantly at p>0.05. This study implies that the parameter which governed the internal transfer of moisture was moisture diffusion.}, year = {2019} }
TY - JOUR T1 - Influence of Sulphite on the Drying Kinetics of Pumpkin Fruit Slices AU - Comfort Mkpentseen Bunde-Tsegba AU - Charles Chukwuma Ariahu AU - Bibiana Dooshima Igbabul AU - Joseph Oneh Abu Y1 - 2019/12/02 PY - 2019 N1 - https://doi.org/10.11648/j.wjfst.20190303.11 DO - 10.11648/j.wjfst.20190303.11 T2 - World Journal of Food Science and Technology JF - World Journal of Food Science and Technology JO - World Journal of Food Science and Technology SP - 32 EP - 39 PB - Science Publishing Group SN - 2637-6024 UR - https://doi.org/10.11648/j.wjfst.20190303.11 AB - Drying kinetics, of pumpkin fruit slices as influenced by sulphiting, was investigated. Pumpkin fruits, were sulphited at 0, 1.0, 1.5, 2.0 and 2.5% to obtain 4 mm thick (P0, 4; P1, 4; P1.5 4; P2, 4; P2.5, 4 - and 5 mm samples (P0, 5; P1, 5; P1.5, 5; P2, 5; P2.5, 5 respectively). Samples were dried at 60, 65, 70, 75 and 80°C at an air velocity of 1.53 m/s. Drying was carried out to constant moisture. Samples were screened using descriptive sensory evaluation to obtain samples P1, 4 and P2, 5 each dried at 75°C as the best samples for 4 mm and 5 mm respectively. Drying curves, moisture diffusitivity, activation energy, drying time and rehydration capacity were determined. The drying curves obtained showed results for a short constant rate followed by a falling rate period. The effective moisture diffusivity varied from 6.235×10-11 to 12.808×10-11m2/s for the 4 mm and 9.046 x 10-11 to 21.330 x 10-11m2/s for the 5 mm samples. Activation energy obtained for P0, 4; P1, 4; P0, 5 and P2, 5 were 31.342, 32.292, 31.525 and 29.88 kJ/mol. respectively. Sulphiting reduced drying time at 1% level from 16.5 to 15.2 hours for the 4 mm sample and 17.8 to 16.9 hours at 2% level of sulphiting for the 5 mm. Sulphite treatment reduced rehydration capacity significantly at p>0.05. This study implies that the parameter which governed the internal transfer of moisture was moisture diffusion. VL - 3 IS - 3 ER -