Activation and inactivation mechanisms of polyphenol oxidase during thermal and non-thermal methods of food processing

A Iqbal, A Murtaza, W Hu, I Ahmad, A Ahmed… - Food and Bioproducts …, 2019 - Elsevier
Polyphenol oxidase (PPO) is thought to be a threat to the food industry because it initiates
the browning reaction during fruit and vegetables processing. Therefore, thermal and non …

Effect of high-pressure carbon dioxide on the aggregation and conformational changes of polyphenol oxidase from apple (Malus domestica) juice

A Murtaza, A Iqbal, Z Linhu, Y Liu, X Xu, S Pan… - Innovative food science & …, 2019 - Elsevier
This study investigated the effect of different states of CO 2 on the activity and structural
modification of purified polyphenol oxidase (PPO) from apple juice. CO 2 in critical and …

Comparative effect of supercritical carbon dioxide and high pressure processing on structural changes and activity loss of oxidoreductive enzymes

K Marszałek, P Doesburg, S Starzonek… - Journal of CO2 …, 2019 - Elsevier
Due to the CO 2 specific characteristics, it has been used as supercritical (Sc) fluid for
several applications, including enzyme inactivation. The influence of Sc-CO 2 (10–65 …

Extracellular pH decline introduced by high pressure carbon dioxide is a main factor inducing bacteria to enter viable but non-culturable state

D Yang, Y Wang, L Zhao, L Rao, X Liao - Food Research International, 2022 - Elsevier
High pressure carbon dioxide (HPCD) has been used in food processing as a non-thermal
pasteurization technology. However, the potential of HPCD to induce viable but non …

Recent progress toward understanding the physiological function, purification, and enzymatic browning control of plant polyphenol oxidases.

X Wang, L Yang, T Wang, R Wang, J Liu, Y Shan… - 2020 - cabidigitallibrary.org
Polyphenol oxidases (PPOs) are a group of metalloenzymes containing copper plastid that
can catalyze the oxidation of polyphenols, which widely exist in plants, animals, and …

Effect of preliminary stresses on the induction of viable but non-culturable Escherichia coli O157: H7 NCTC 12900 and Staphylococcus aureus ATCC 6538

D Yang, L Zhao, L Rao, X Liao - Food Research International, 2023 - Elsevier
As a novel non-thermal pasteurization technology, high pressure carbon dioxide (HPCD)
has been used in food processing. However, it could induce microorganisms into a viable …

The application of supercritical carbon dioxide for the stabilization of native and commercial polyphenol oxidases and peroxidases in cloudy apple juice (cv. Golden …

K Marszałek, B Kruszewski, Ł Woźniak… - Innovative Food Science & …, 2017 - Elsevier
Supercritical carbon dioxide (SCCD) was applied for the native tissue and commercial
enzyme inactivation in cloudy apple juice. The polyphenol oxidases (PPO) and peroxidases …

Evaluation of HPCD batch treatments on enzyme inactivation kinetics and selected quality characteristics of cloudy juice from Golden delicious apples

AE Illera, MT Sanz, S Beltrán, R Melgosa… - Journal of Food …, 2018 - Elsevier
Cloudy apple juice has been treated by high pressure carbon dioxide (HPCD) as non-
thermal technology to inactive polyphenoloxidase and pectinmethylesterase in batch mode …

Effect of hyperbaric storage at room temperature on the activity of polyphenoloxidase in model systems and fresh apple juice

L Manzocco, F Basso, MC Nicoli - Food and Bioprocess Technology, 2023 - Springer
The effect of hyperbaric storage (HS) on polyphenoloxidase activity (PPO) was studied in
model solutions and apple juice. Model solutions containing increasing amounts of …

Impact of high-pressure carbon dioxide on polyphenoloxidase activity and stability of fresh apple juice

L Manzocco, S Plazzotta, S Spilimbergo… - LWT-Food Science and …, 2017 - Elsevier
Freshly-extracted apple juice was exposed to high pressure carbon dioxide (HP-CO 2)
treatment at 20, 35 and 45° C at different pressure conditions (6.0, 12.0 and 18.0 MPa) for up …