Hurdle effect of thermosonication and non‐thermal processing on the quality characteristics of fruit juices: An overview

Abstract

AbstractTraditional thermal processing technologies are widely used to extend the shelf life of fruit juices. However, its detrimental effect on the nutritional and sensory properties of fruit juices paved the way for alternative food processing technologies. Non‐thermal processing methods can be a substitute for thermal methods because they have no/minimal effect on the nutritive and sensory qualities of fruit juices and improve their storage quality by deactivating enzymes and eliminating microorganisms. In this review article, combined use of thermosonication (TS) with other non‐thermal processing technologies in fruit juice processing has been detailed. Additionally, the impact of TS on the various qualities of fruit juices as well as the TS mechanism have been covered. TS, one of the emerging non‐thermal technologies have been preferred in fruit juice and beverage processing industries over the past few years, due to consumer's preference towards high quality and nutritious food products. When TS is employed in combination with other non‐thermal processing methods, it reduces processing time, improves process efficiency, and reduces power consumption. The content of this review paper might be beneficial for upcoming research and the commercialization of this hurdle‐based approach.Practical ApplicationsGenerally, fruit juices were treated using thermal methods (e.g., pasteurization) for extending the shelf life by inactivating microbial and enzymatic activities. But it shows negative impact on the nutritional and sensorial attributes of fruit juices. Non‐thermal technologies like, TS has been preferred as an alternative method for the processing of juices due to their less/no effect on the quality parameters of juices. The benefits of TS as compared with thermal treatments include less flavor loss, significant energy savings, and increased homogeneity. TS reduces the processing temperature and time required for pasteurization of juices and it can be used to make high‐quality fruit juices that are additive‐ and preservative‐free. In the review, the effect of TS on fruit juice quality as well as its combined effect with high pressure processing and pulse electric field processing has been summarized. The finding of this review paper might be helpful for the further exploration of these technologies in the large‐scale food industries.