FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000873749> ?p ?o ?g. }

• W2000873749 endingPage "1046" @default.
• W2000873749 startingPage "1034" @default.
• W2000873749 abstract "ABSTRACT The objective of this study was to evaluate the activity, kinetic behavior and thermal inactivation kinetics of apple polyphenol oxidase (PPO). PPO was extracted from an apple (cv. Starking Delicious), and enzyme activity was measured with 4-methyl catechol and pyrogallol. Optimum pH of the enzyme was found as 5.5 with 4-methyl catechol and 7.2 with pyrogallol. The kinetics of PPO catalyzed oxidation obeyed Michaelis–Menten model with both substrates. Apple PPO had a higher affinity to 4-methyl catechol than pyrogallol having Km values of 2.24 mM and 8.04 mM, respectively. Thermal inactivation of apple PPO was studied at temperatures from 45C to 75C with different exposure times. When remaining enzyme activity was measured with pyrogallol, PPO activity initially increased and then decreased which shows activation of apple PPO at initial stages of heat treatment at 45, 55 and 65C. In apple extract there were both soluble and latent PPO with different substrate affinities and thermal stabilities. Activation energies of soluble and latent PPO were found as 12.85 kcal/mol and 7.89 kcal/mol, respectively (T < 75C). Soluble PPO was more heat stable than latent PPO. Heat treatment at 75C for 10 min resulted in 46% inactivation of soluble PPO where latent PPO was 62% inactivated at the same condition. PRACTICAL APPLICATIONS Color is an important quality attribute of food. PPO catalyzes the oxidation of phenols to colored quinones. These quinones are further polymerized to form brown pigments which are generally considered to be detrimental to food quality from both organoleptic and nutritional points of view. The most effective method to inactivate PPO is heat treatment. Thermal stability of apple PPO has been investigated by many researchers and it was found that each variety has different characteristics and thermal stabilities. This research demonstrates that the characterization of the Starking PPO is necessary to control enzymatic browning of this apple. This study shows that Starking apple has both soluble and latent PPO with different thermal stabilities and the enzyme can be activated with mild heating. To control enzymatic browning of this apple variety, heat treatment must be applied with temperature greater than 75C." @default.
• W2000873749 created "2016-06-24" @default.
• W2000873749 creator A5000453720 @default.
• W2000873749 date "2008-12-01" @default.
• W2000873749 modified "2023-10-14" @default.
• W2000873749 title "KINETICS AND THERMAL ACTIVATION/INACTIVATION OF STARKING APPLE POLYPHENOL OXIDASE" @default.
• W2000873749 cites W196463875 @default.
• W2000873749 cites W1966501799 @default.
• W2000873749 cites W1977343758 @default.
• W2000873749 cites W1980892488 @default.
• W2000873749 cites W1983613969 @default.
• W2000873749 cites W1984723225 @default.
• W2000873749 cites W1985668854 @default.
• W2000873749 cites W1988264071 @default.
• W2000873749 cites W2004581993 @default.
• W2000873749 cites W2009677084 @default.
• W2000873749 cites W2019382309 @default.
• W2000873749 cites W2021149805 @default.
• W2000873749 cites W2035765149 @default.
• W2000873749 cites W2036527773 @default.
• W2000873749 cites W2049149746 @default.
• W2000873749 cites W2050203553 @default.
• W2000873749 cites W2055832642 @default.
• W2000873749 cites W2065461366 @default.
• W2000873749 cites W2074785362 @default.
• W2000873749 cites W2081611644 @default.
• W2000873749 cites W2095830480 @default.
• W2000873749 cites W2107268560 @default.
• W2000873749 cites W2129832192 @default.
• W2000873749 cites W2157654711 @default.
• W2000873749 cites W2164853637 @default.
• W2000873749 cites W2177500045 @default.
• W2000873749 cites W2182986356 @default.
• W2000873749 cites W2263375597 @default.
• W2000873749 cites W2480617402 @default.
• W2000873749 doi "https://doi.org/10.1111/j.1745-4549.2008.00298.x" @default.
• W2000873749 hasPublicationYear "2008" @default.
• W2000873749 type Work @default.
• W2000873749 sameAs 2000873749 @default.
• W2000873749 citedByCount "31" @default.
• W2000873749 countsByYear W20008737492012 @default.
• W2000873749 countsByYear W20008737492013 @default.
• W2000873749 countsByYear W20008737492014 @default.
• W2000873749 countsByYear W20008737492015 @default.
• W2000873749 countsByYear W20008737492016 @default.
• W2000873749 countsByYear W20008737492018 @default.
• W2000873749 countsByYear W20008737492019 @default.
• W2000873749 countsByYear W20008737492020 @default.
• W2000873749 countsByYear W20008737492021 @default.
• W2000873749 countsByYear W20008737492022 @default.
• W2000873749 crossrefType "journal-article" @default.
• W2000873749 hasAuthorship W2000873749A5000453720 @default.
• W2000873749 hasBestOaLocation W20008737491 @default.
• W2000873749 hasConcept C111368507 @default.
• W2000873749 hasConcept C121332964 @default.
• W2000873749 hasConcept C127313418 @default.
• W2000873749 hasConcept C13965031 @default.
• W2000873749 hasConcept C148898269 @default.
• W2000873749 hasConcept C162008176 @default.
• W2000873749 hasConcept C178790620 @default.
• W2000873749 hasConcept C181199279 @default.
• W2000873749 hasConcept C185592680 @default.
• W2000873749 hasConcept C2776338311 @default.
• W2000873749 hasConcept C2776344562 @default.
• W2000873749 hasConcept C2777289219 @default.
• W2000873749 hasConcept C2777713698 @default.
• W2000873749 hasConcept C2777728882 @default.
• W2000873749 hasConcept C2778004101 @default.
• W2000873749 hasConcept C58808276 @default.
• W2000873749 hasConcept C62520636 @default.
• W2000873749 hasConcept C70899900 @default.
• W2000873749 hasConceptScore W2000873749C111368507 @default.
• W2000873749 hasConceptScore W2000873749C121332964 @default.
• W2000873749 hasConceptScore W2000873749C127313418 @default.
• W2000873749 hasConceptScore W2000873749C13965031 @default.
• W2000873749 hasConceptScore W2000873749C148898269 @default.
• W2000873749 hasConceptScore W2000873749C162008176 @default.
• W2000873749 hasConceptScore W2000873749C178790620 @default.
• W2000873749 hasConceptScore W2000873749C181199279 @default.
• W2000873749 hasConceptScore W2000873749C185592680 @default.
• W2000873749 hasConceptScore W2000873749C2776338311 @default.
• W2000873749 hasConceptScore W2000873749C2776344562 @default.
• W2000873749 hasConceptScore W2000873749C2777289219 @default.
• W2000873749 hasConceptScore W2000873749C2777713698 @default.
• W2000873749 hasConceptScore W2000873749C2777728882 @default.
• W2000873749 hasConceptScore W2000873749C2778004101 @default.
• W2000873749 hasConceptScore W2000873749C58808276 @default.
• W2000873749 hasConceptScore W2000873749C62520636 @default.
• W2000873749 hasConceptScore W2000873749C70899900 @default.
• W2000873749 hasIssue "6" @default.
• W2000873749 hasLocation W20008737491 @default.
• W2000873749 hasOpenAccess W2000873749 @default.
• W2000873749 hasPrimaryLocation W20008737491 @default.
• W2000873749 hasRelatedWork W1982180215 @default.
• W2000873749 hasRelatedWork W2000873749 @default.
• W2000873749 hasRelatedWork W2103942285 @default.
• W2000873749 hasRelatedWork W2176106723 @default.
• W2000873749 hasRelatedWork W2188546143 @default.

• next