Examinando por Autor "Torpoco Apolinario, Lucila Erika"

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    Contenido de ácido ascórbico en zumo de naranja (Citrus sinensis) embotellado expendido de forma ambulatoria en relación al recién exprimido en Lima – 2018
    (Universidad Privada Norbert Wiener, 2018-11-12) Saucedo Cerna, Teodelinda; Torpoco Apolinario, Lucila Erika; Guadalupe Sifuentes de Posadas, Luz Fabiola
    Currently, in Peru, the consumption of bottled natural orange juice sold by street vendors is very common. Orange juice is known for its ascorbic acid content, which decreases during the processing and storage of the juice because it is the most unstable and fragile micronutrient. The stability of ascorbic acid is affected by light, oxygen, water activity, temperature, and pH. Objective: To determine the ascorbic acid content in bottled orange juice (Citrus sinensis) sold by street vendors compared to freshly squeezed juice in Lima. Method: The Folin-Ciocalteu method with a spectrophotometer was used, and 31 samples of street-sold orange juice were analyzed in triplicate. Results: Freshly squeezed orange juice from the “Mercado Modelo de Frutas” in the San Luis district contained the highest concentration of ascorbic acid at 33.86 mg/100 mL, compared to bottled orange juice sold by street vendors in Lima, which contained 20.29 mg/100 mL, 16.38 mg/100 mL, and 11.39 mg/100 mL of ascorbic acid. Conclusion: It was demonstrated that bottled orange juice (Citrus sinensis) sold by street vendors contains a lower concentration of ascorbic acid compared to freshly squeezed juice.