Improving functional properties of "Piel de Sapo" melon juice by addition of a Lippia citriodora natural extract and probiotic-type lactic acid bacteria. (October 2018)

• Record Type: Journal Article
• Authors: Rúa, Javier; López-Rodríguez, Iván; Sanz, Javier; García-Fernández, María Camino; del Valle, María Pilar; García-Armesto, María Rosario
• Is Part Of: Lebensmittel-Wissenschaft + Technologie =. Volume 96(2018)
• Page Start: 75
• Page End: 81
• Publication Date: 2018-10
• Subjects: "Piel de Sapo" melon juice -- Lippia citrodora extract, probiotics -- Antioxidant activity -- Growth potential; Food industry and trade -- Periodicals; Food -- Composition -- Periodicals; Microbiology -- Periodicals; Nutrition -- Periodicals; 664.005
• DOI: 10.1016/j.lwt.2018.05.028
• Languages: English
• ISSNs: 0023-6438

Abstract

Abstract: Six selected lactic-acid probiotic-type (PT-LAB) bacteria were screened for sensitivity towards a Lippia citrodora extract with reported functional properties (PLX ® ). The effect of pH (6.7 and 5.5) and temperature (35 °C and 4 °C) on the minimum inhibitory concentrations (MICs) was determined by the microdilution broth assay. PLX ® MIC values at 4 °C were lower than those at 35 °C, and at pH 5.5 were generally higher than those at pH 6.7. After storage at 4 ºC-4 days, both plain "Piel de Sapo" melon juice (MJ) and fortified with PLX ® (PLX ® FMJ) at 2500 μg/mL (maximum sensorial acceptable limit in MJ), maintained the viability of the six PT-LAB bacteria. Additionally, four of these bacteria showed growth potential (δ > 0.5) in MJ and only one of them ( Lactobacillus rhamnosus GG) in PLX ® FMJ. PLX ® synergistically increased the antioxidant activity of MJ. PLX ® and PT-LAB are promising ingredients to increase the functional properties of "Piel de Sapo" MJ. Highlights: "Piel de sapo" melon juice is suitable for delivering probiotic lactic acid bacteria. Lactobacillus rhamnosus GG was able to grow in "Piel de sapo" melon juice with PLX ® . PLX ® increase synergistically the antioxidant activity of "Piel de sapo" melon juice. "Piel de sapo" melon juice functionality would improve by PLX ® and probiotics.