Impact Of Ultra Sonication On Safety And Quality Characteristics Of Orange Pulp

Abstract

Fruit pulp has a huge amount of phenolic and other bioactive compounds as well as carotenoids, vitamins, and
anthocyanins. They are usually processed by conventional pasteurization that allows obtaining juice pulp with a low
microbial count. However, the use of thermal treatments results in adverse changes in composition and loss of organoleptic attributes such as loss of aroma, color, flavor, and texture of juices. With an increasing demand for high-quality, safe, nutritious, and minimally processed pulp with fresh-like characteristics, modern fruit processing industries are looking for alternative processing. Hurdle technologies are sought to maintain the nutritional profile of the fruit pulp. The purpose of this research is to combine ultrasound and additives as a hurdle technology to preserve the quality of pulp as consumer demands for safe and nutritious products. In this research, we study the combined effects of ultrasound and their additives on the overall quality of orange pulp was investigated. The effectiveness of ultrasound treatment was enhanced with a combination of additives which enhanced the overall quality of mixed orange pulp. The physicochemical and microbiological analysis were performed. Bioactive compounds were also measured. Finally, the data obtained by analyzing quality parameters was brought to statistical analysis. A statistically significant increase was noticed in total phenolic contents and total flavonoid contents whereas a decrease in microorganisms (TPC, Y&M count) were found in all the samples. The total value of antioxidant capacity as well as DPPH radical scavenging activity both increased significantly high. Physicochemical characteristics such as pH, total soluble solids, and titratable acidity were retained, and the results were non-significant. There were also some differences in the color values. However, maximum improvement for Ascorbic acid contents was observed in the T3 treatment. The results of this study revealed that the combined treatment T3 (ultrasound and additives) produced the best results and has the ability to improve the overall quality of orange pulp and can also be employed for industrial processing