Influence of quality attributes on the markert value of sweet potatoes tubers and processed cassava
| dc.contributor.author | Ndunguru, Abriel T. | |
| dc.date.accessioned | 2026-02-04T17:17:48Z | |
| dc.date.available | 2026-02-04T17:17:48Z | |
| dc.date.issued | 2001 | |
| dc.description | Dissertation | |
| dc.description.abstract | Cassava (Manihot esculenta Crantz} roots and sweet potato (Ipomoea batatas (L) Lam) tubers are important staple food crops in several areas of Tanzania. Studies were conducted in Mwanza and Dar es Salaam markets in order to assess the factors that influence the quality and market value relationship of fresh sweet potato tubers and processed cassava roots. Consumers and traders in Mwanza preferred sweet potato tubers which are wholesome and free from infestation. White processed cassava root products were preferred by traders and consumers in Mwanza. Valuation assessment made on sweet potatoes showed that, broken, cut and weevil infested tubers sold were at 12.1, 14.2 and 36.6 percent discount respectively. Average valuation discount of processed cassava roots were 10 to 15 for yellow, 20 to 25 for greenish and 35 to 40 percent for dark product. Causes of losses in quality of sweet potato tubers were due to operations related to handling and transportation. Occurrence of broken tubers, skinning injury and cuts increased significantly with handling and transportation (P < 0.001). The largest loss in quality occurred between the lakeshore and the port at Mwanza when sacks were loaded and unloaded from the ship and handled at the port. | |
| dc.identifier.uri | https://www.suaire.sua.ac.tz/handle/20.500.14820/7291 | |
| dc.language.iso | en | |
| dc.publisher | Sokoine University of Agriculture | |
| dc.subject | Market value | |
| dc.subject | Sweet potatoes | |
| dc.subject | processed cassava | |
| dc.subject | Ipomoea batatas (L) Lam | |
| dc.subject | Food crops | |
| dc.title | Influence of quality attributes on the markert value of sweet potatoes tubers and processed cassava | |
| dc.type | Thesis |