ABSTRACT

The Processed carrot discards (PCDs) separated during the primary processing of carrots are partially utilized towards animal feed and the remaining end in the landfills. The study was undertaken to evaluate the prospects of using the PCDs towards preparation of carrot puree. PCDs were procured from the processing unit in Ontario, Canada. These were processed into carrot puree (with and without thermal pretreatment). The prepared purees were evaluated for the physical and nutraceutical properties, and the most desirable among these was compared with the commercially available carrot purees. Carrot puree processed from steam blanched PCDs reported β-carotene (94.56µgg-1), α-carotene (86.62µgg-1), Total Soluble Solids (5.50 °Brix) and color values with L (36.40), a (22.90) and b (30.00). The regression model correlated the presence of β-carotene to color values (a, b) and particle size D (0.9) with R²(0.9939) and p-value (0.0091 < 0.05). Comparing the properties of carrot puree prepared from PCDs with commercially available carrot purees, significant differences (p ≤ 0.05) were recorded in color, β-carotene and α-carotene content. No significant difference (p≤0.05) was recorded for the particle size, density, sedimentation index and moisture content. The study concluded that the thermally pretreated PCDs can be used for carrot puree preparation. It is suggested to include some percentage of graded carrots with PCDs to enhance the nutraceutical properties of the carrot puree.

摘要

在胡萝卜初级加工过程中分离出的加工过的胡萝卜废弃物 (PCD) 部分用于动物饲料，其余部分用于垃圾填埋场。该研究旨在评估使用 PCD 制备胡萝卜泥的前景。PCD 是从加拿大安大略省的加工单位采购的。这些被加工成胡萝卜泥（有和没有热预处理）。评估制备的果泥的物理和营养特性，并将其中最理想的果泥与市售的胡萝卜果泥进行比较。由蒸汽烫过的 PCD 加工的胡萝卜泥报告了 β-胡萝卜素 (94.56µgg-1)、α-胡萝卜素 (86.62µgg-1)、总可溶性固体 (5.50 °Brix) 和颜色值 L (36.40)、a (22.90) 和b (30.00)。² (0.9939) 和 p 值 (0.0091 < 0.05)。比较由 PCD 制备的胡萝卜泥与市售胡萝卜泥的特性，在颜色、β-胡萝卜素和α-胡萝卜素含量方面记录到显着差异（p ≤ 0.05）。粒径、密度、沉降指数和水分含量均无显着差异（p≤0.05）。该研究得出的结论是，经过热预处理的 PCD 可用于制备胡萝卜泥。建议在一定比例的分级胡萝卜中加入 PCD，以增强胡萝卜泥的营养特性。