This study aimed to assess the fermentability of a pistachio-based beverage. The effects of lactic acid fermentation on the odor profile and the stability of the beverage were also assessed. To this end, a procedure for obtaining a pistachio beverage was developed, and the nutritional composition of the beverage was obtained. The beverage was characterized by a high content of fiber (2.9%), fat (4.6%), and protein (2%), and contained high amounts of K and Mg. For the experiment, 43 cultures of the following lactic acid bacteria were used: Companilactibacillus paralimentarius, Companilactibacillus kimchi, Levilactibacillus brevis, Lactiplantibacillu pentosus, Lactiplantibacillus plantarum, Lactiplantibacillus paraplantarum, Latilactobacillus curvatus, Leuconostoc pseudomesenteroides, and Furfurilactobacillus rossiae. The cultures were evaluated for the following technological characteristics: i) growth and acidifying activity, ii) production of exopolysaccharides; iii) presence of histidine decarboxylase (hdcA) gene; iv) antimicrobial activity against Listeria innocua. The cultures were used in model pistachio-based fermentations to assess their ability to grow and acidify. The odor profile of the beverage after 24 h fermentation was assessed using an electronic nose system (E-nose). The pistachio-based beverage resulted an optimal substrate for lactic acid bacteria that reached loads between 8 and 10 log CFU/mL and acidified the beverage to pH values between 4 and 5.5. In the beverage, viable counts of all cultures remained above 8 log CFU/mL after 30 days of storage at 4 ◦C. The E-nose analysis represented a valid screening method to evaluate the effects of the fermentative activity of microbial starters on the qualitative characteristics of this novel food matrix.

Insight into the role of lactic acid bacteria in the development of a novel fermented pistachio (Pistacia vera L.) beverage / Di Renzo, Tiziana; Osimani, Andrea; Marulo, Serena; Cardinali, Federica; Mamone, Gianfranco; Puppo, Cecilia; Garzòn, Antonela G.; Drago, Silvina R.; Laurino, Carmine; Reale, Anna. - In: FOOD BIOSCIENCE. - ISSN 2212-4292. - STAMPA. - 53:102802(2023), pp. 1-10. [10.1016/j.fbio.2023.102802]

Insight into the role of lactic acid bacteria in the development of a novel fermented pistachio (Pistacia vera L.) beverage

Andrea Osimani;Federica Cardinali;
2023-01-01

Abstract

This study aimed to assess the fermentability of a pistachio-based beverage. The effects of lactic acid fermentation on the odor profile and the stability of the beverage were also assessed. To this end, a procedure for obtaining a pistachio beverage was developed, and the nutritional composition of the beverage was obtained. The beverage was characterized by a high content of fiber (2.9%), fat (4.6%), and protein (2%), and contained high amounts of K and Mg. For the experiment, 43 cultures of the following lactic acid bacteria were used: Companilactibacillus paralimentarius, Companilactibacillus kimchi, Levilactibacillus brevis, Lactiplantibacillu pentosus, Lactiplantibacillus plantarum, Lactiplantibacillus paraplantarum, Latilactobacillus curvatus, Leuconostoc pseudomesenteroides, and Furfurilactobacillus rossiae. The cultures were evaluated for the following technological characteristics: i) growth and acidifying activity, ii) production of exopolysaccharides; iii) presence of histidine decarboxylase (hdcA) gene; iv) antimicrobial activity against Listeria innocua. The cultures were used in model pistachio-based fermentations to assess their ability to grow and acidify. The odor profile of the beverage after 24 h fermentation was assessed using an electronic nose system (E-nose). The pistachio-based beverage resulted an optimal substrate for lactic acid bacteria that reached loads between 8 and 10 log CFU/mL and acidified the beverage to pH values between 4 and 5.5. In the beverage, viable counts of all cultures remained above 8 log CFU/mL after 30 days of storage at 4 ◦C. The E-nose analysis represented a valid screening method to evaluate the effects of the fermentative activity of microbial starters on the qualitative characteristics of this novel food matrix.
2023
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/317451
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