Publications by authors named "Quinatzin Yadira Zafra-Rojas"

Article Synopsis
  • Soursop nectar, known for its antioxidants, undergoes pasteurization which negatively impacts its beneficial properties; thermoultrasound is proposed as a better alternative for preservation.
  • The optimal conditions for thermoultrasound treatment were found to be 82% amplitude for 9.15 minutes, with sweeteners added, and several physicochemical and antioxidant properties were analyzed and compared to pasteurized nectar.
  • Results showed that thermosonicated nectar had higher antioxidant activity and total phenolic content than pasteurized nectar, indicating that thermoultrasound is a more effective preservation method.
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Nowadays, there is a growing interest in the exploitation of by-products from fruits and vegetables, generated from industrial processing or human feeding. Residues of popularly consumed fruits such as orange, lemon, banana, pomegranate, among others, have been widely described and studied; however, cactus pear ( spp.) residues, as a locally consumed product, have been forgotten.

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Obesity is a disease characterized by an inflammatory process in the adipose tissue due to diverse infiltrated immune cells, an increased secretion of proinflammatory molecules, and a decreased secretion of anti-inflammatory molecules. On the other hand, obesity increases the risk of several diseases, such as cardiovascular diseases, diabetes, and cancer. Their treatment is based on nutritional and pharmacological strategies.

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Agro-industries residues of fruit are a source of antioxidant compounds with a possible health impact. The aim of this study was to evaluate the total phenolic content (TPC), total monomeric anthocyanins (TMA), individual phenolic compounds (IPC), antioxidant capacity and in vitro intestinal bioaccessibility from blackberry residues (BR), and ultrasonicated blackberry residues (US-BR). The results showed that BR had higher TPC (4,016.

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The purpose of this research was to optimize the thermoultrasound conditions for blackberry juice using the response surface methodology and considering juice quality parameters and antioxidant capacity. With the exception of microbial growth, the response variables showed high correlation coefficients with the mathematical model (Radj>0.91).

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Cactus pear (Opuntia ficus-indica) fruit is a berry with a tasty pulp full of seeds that constitutes about 10-15% of the edible pulp. In Mexico, cactus pear is mainly consumed fresh, but also has the potential to be processed in other products such as juice. The objective of this study was to evaluate the effect of different ultrasound conditions at amplitude levels ranging (40% and 60% for 10, 15, 25 min; 80% for 3, 5, 8, 10, 15 and 25 min) on the characteristics of purple cactus pear juice.

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