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. 2022 Aug 3;10(11):4059-4072.
doi: 10.1002/fsn3.3001. eCollection 2022 Nov.

Investigation of the physicochemical, antioxidant, rheological, and sensory properties of ricotta cheese enriched with free and nano-encapsulated broccoli sprout extract

Zahra Azarashkan  1 , Ali Motamedzadegan  2 , Azade Ghorbani-HasanSaraei  1 , Pourya Biparva  3 , Somayeh Rahaiee  4
Affiliations

Investigation of the physicochemical, antioxidant, rheological, and sensory properties of ricotta cheese enriched with free and nano-encapsulated broccoli sprout extract

Zahra Azarashkan et al. Food Sci Nutr. .

Abstract

This study aimed to produce the functional ricotta cheese using broccoli sprouts extract (BSE) and to evaluate its physicochemical, antioxidant, rheological, and sensory properties. The BSE nano-liposome was nano-encapsulated into basil seed gum (BSG) and was incorporated into the ricotta cheese formulation in two forms of free and nano-capsules in two levels of 3% and 5% w/w. The measurements were conducted during a 15-day storage period at 4-6°C. The results showed that the titratable acidity, hardness, and chewiness of cheeses were increased and the pH, moisture, total phenol content (TPC), and antioxidant activity were decreased (p < .05). With the addition of BSE concentration, the TPC and antioxidant activity increased significantly (p < .05) and applying the nano-encapsulation method for BSE led to better preservation of bioactive compounds. Based on the rheological results, viscoelastic solid behavior and a weak gel were observed in all cheese samples. The results of sensory evaluation demonstrated that cheeses containing free extract had lower flavor and overall acceptability scores than other samples, which indicates that the nano-encapsulation covered the undesirable flavor of the BSE. Generally, during the 15-day cold storage period, the highest sensory acceptance and functional activity were related to the samples containing nano-encapsulated BSE, especially at the 5% level.

Keywords: antioxidant activity; broccoli sprout; encapsulation; ricotta cheese; sensory evaluation; textural properties.

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Conflict of interest statement

The authors declare that they have no conflicts of interest to disclose.

Figures

FIGURE 1
FIGURE 1
Comparing the total phenol content (TPC) (mg gallic acid equivalent (mg GAE)/g of cheese) of the ricotta cheese samples during 15‐day refrigerated storage period.
FIGURE 2
FIGURE 2
Comparing the 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) (%) of the ricotta cheese samples during 15‐day refrigerated storage period.
FIGURE 3
FIGURE 3
Comparing the 2,2′‐azino‐bis‐(3‐ethylbenzothiazoline‐6‐sulfonic acid) (ABTS (mg trolox equivalent (mg TE)/g of cheese) of the ricotta cheese samples during 15‐day refrigerated storage period.
FIGURE 4
FIGURE 4
Changes in the complex viscosity (Pa.s) of ricotta cheeses versus angular frequency on different days of refrigeration.
FIGURE 5
FIGURE 5
Changes in the G′ and G″ (Pa) of ricotta cheeses versus angular frequency on different days of refrigeration.
See this image and copyright information in PMC

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