Home > XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Postharvest Technology in the Global Market > POLYPHENOLOXIDASE ACTIVITY AND TISSUE BROWNING IN FRESH-CUT ‘ROCHA’ PEAR AS AFFECTED BY PH AND PHENOLIC SUBSTRATE

Articles

POLYPHENOLOXIDASE ACTIVITY AND TISSUE BROWNING IN FRESH-CUT ‘ROCHA’ PEAR AS AFFECTED BY PH AND PHENOLIC SUBSTRATE

Article number

934_78

Pages

591 – 597

Language

English

Abstract

Cell rupture in fresh-cut processing allows phenolic substrates and polyphenol¬oxidase (PPO), previously sequestered in different organelles, to react leading to undesirable color development.
However, it is not always clear how PPO activity and phenolic content relate to tissue browning.
We studied the effect of pH and phenolic substrates on PPO activity and on tissue browning in fresh-cut Rocha pear, to help in the development of food additives that maximize the quality of fresh-cut pear.
Substrates 4-methyl catechol, caffeic acid, (+)-catechin hydrate, catechol, chlorogenic acid, dopamine hydrochloride, and pyrogallol, were prepared in citric acid-phosphate buffer at pH values ranging from 3.0 to 8.0. PPO activity was assayed by measuring the rate of increase in absorbance at 420 nm wavelength at 25°C. Pear slices were covered with the buffered phenolic solutions and color change was assessed following 30 min at room temperature. pH optima for PPO activity depended on the phenolic substrate.
Activity was optimal at pH 5.0 for catechol and 4-methylcatechol; pH 6.0 for chlorogenic acid; pH 7.0 for dopamine, caffeic acid, and catechin; and pH 8.0 for pyrogallol.
The highest PPO activity at every pH tested was observed when catechol was used as substrate.
Discrepancies were observed between the pH dependency of PPO activity and browning.
Significant correlations were obtained between PPO activity and lightness (L*) or metric-hue difference (∆H*) over the pH range 3.0 to 8.0 except for chlorogenic acid and 4-methylcatechol.
With chlorogenic acid, the main PPO substrate in Rocha pear, tissue browning was higher at pH 3.0 (higher ∆H*), but PPO activity was very low at the same pH. Similarly with the other phenolic substrates, browning at pH 3.0 was higher than the corresponding PPO activity.
The pH of additives for cut pear should be corrected to reduce browning potential.

Publication

XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Postharvest Technology in the Global Market

Authors

M.H. Gomes, T. Vieira, J.F. Fundo, D.P.F. Almeida

Keywords

color, minimal processing, Pyrus communis

Full text

https://doi.org/10.17660/ActaHortic.2012.934.78

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A.I. Deltsidis | P. Tsouvaltzis | J.K. Brecht

83. THE EFFECTS OF PIECE SIZE AND STORAGE TEMPERATURES ON MINIMALLY PROCESSED ‘AURORA-1’ PEACHES

R.N. Martins | B.H. Mattiuz | L.O. Santos | J.R. Donadon | C.F.M. Mattiuz

84. EFFECT OF SOME DIP TREATMENTS ON THE NUTRITIONAL PROPERTIES OF FRESH-CUT TOMATO AND PEPPER DURING STORAGE

85. INFLUENCE OF HIGH CO₂ ATMOSPHERE COMPOSITION ON FRESH-CUT ARTICHOKE QUALITY ATTRIBUTES

M. la Zazzera | R. Rinaldi | M.L. Amodio | G. Colelli

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M.L. Amodio | L. Dollo | R. Rinaldi | G. Colelli

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M. Donetti | L.A. Terry

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H. Bessi | H. Debbabi | K. Grissa | S. Bellagha

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92. EFFECT OF ETHANOL AND HOT WATER ON POSTHARVEST RIPENING OF PERSIMMON

A. Ramezanian

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105. NITRIC OXIDE-INDUCED ENHANCEMENT OF BANANA FRUIT ATTRIBUTES AND KEEPING QUALITY

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110. EFFECTS OF BAGGING TWICE AND ROOM TEMPERATURE STORAGE ON QUALITY OF ‘CUIGUAN’ PEAR FRUIT

J. Lin | Z.H. Wang | X.G. Li | Y.H. Chang

111. CELL WALL MODIFICATIONS FOLLOWING COLD STORAGE OF CALCIUM-TREATED ‘GOLDEN REINDERS’ APPLES

A. Ortiz | J. Graell | I. Lara

112. SELECTION FOR IMPROVED FRUIT TEXTURE AND STORABILITY IN APPLE

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113. ASSESSMENT OF BITTER PIT RISK IN ‘GALA’ APPLES BY FRUIT INFILTRATION WITH MAGNESIUM

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114. PREDICTING BITTER PIT IN ‘GOLDEN SMOOTHEE’ APPLES

E. Torres | S. Alegre

115. MATURITY INDEX AND COLD STORAGE EFFECTS ON POSTHARVEST QUALITY OF ‘PACKHAM’S TRIUMPH’ AND ‘ROCHA’ PEARS

L.R. Antoniolli | A.B.C. Czermainski

116. APPLE RIPENING DETERMINED BY CONVENTIONAL METHODS AND THE ‘NSURE’ GENETIC ASSAY

D.A. Neuwald | J. Streif

117. EXPLORING THE INVOLVEMENT OF ETHYLENE IN THE REGULATION OF COLOR CHANGES IN CITRUS FRUIT

L. Carmona | M.J. Rodrigo | L. Zacarías

118. DEGREENING OF ‘SATSUMA OKITSU’ TANGERINE

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119. ANTIOXIDANT ACTIVITY AND VITAMIN C ARE NOT AFFECTED BY DEGREENING TREATMENT OF CLEMENTINE MANDARINS

S. Sdiri | P. Navarro | J. Ben Abda | A. Monterde | A. Salvador

120. PHYSICAL AND CHEMICAL CHARACTERIZATION OF PERSIAN LIME FRUIT HARVESTED AT TWO STAGES OF MATURITY

121. THE POTENTIAL OF HOT WATER AND MOLYBDENUM DIPS TO INDUCE A SYNERGISTIC SUGAR-ASCORBIC ACID INTERACTION IN LEMON RIND DURING COLD STORAGE

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122. ABSCISIC ACID MODULATES MANGO FRUIT RIPENING

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123. EFFECT OF POST-HARVEST DISTRIBUTION ENVIRONMENT ON QUALITY DETERIORATION OF MANGO FRUITS

124. ROLE OF BRASSINOSTEROIDS IN MANGO FRUIT RIPENING

S.S. Zaharah | Z. Singh

125. MASS ESTIMATION OF MANGOES BY PROCESSING OF WHITE BACKGROUND GRAYSCALE IMAGES

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126. AN ADAPTIVE THRESHOLD LEVEL FOR SEGMENTATION OF GRAYSCALE IMAGES USING IMAGE PROCESSING TO SORT MANGOES BY WEIGHT ESTIMATION

M.E.R.M. Cavalcanti Mata | M.E.M. Duarte | F.F. Borges | I.L. Barbacena

127. AROMA VOLATILES DURING WHOLE MELON RIPENING IN A CLIMACTERIC NEAR-ISOGENIC LINE AND ITS INBRED NON-CLIMACTERIC PARENTS

J.P. Fernández-Trujillo | M. Fernández-Talavera | M. Ruiz-León | M.J. Roca | N. Dos-Santos

128. LYSOPHOSPHATIDYLETHANOLAMINE EFFECTS UPON VOLATILES AND QUALITY OF FRESH-CUT CANTALOUPE MELON

129. NON-ENZYMATIC ANTIOXIDANT ACTIVITY OF SKIN AND FLESH OF NEAR-ISOGENIC LINES OF MELON IS LINKED TO POSTHARVEST BEHAVIOR

Y. Piñeros | J.P. Fernández-Trujillo

130. QUALITY ORIENTED BREEDING USING SENSORY ATTRIBUTES IN MELON: THE CASE OF CLIMACTERIC AND NON-CLIMACTERIC NEAR-ISOGENIC LINES OBTAINED FROM NON-CLIMACTERIC PARENTS

J.P. Fernández-Trujillo | M.C. Bueso | M.S. Hernández

131. POSTHARVEST CHANGE IN COMPOSITIONAL, VISUAL AND TEXTURAL QUALITY OF GRAFTED WATERMELON CULTIVARS

M.C. Kyriacou | G.A. Soteriou

132. FRUIT COLOUR, SIZE AND TEMPERATURE AFFECT THE SHELF LIFE OF SWEET CHERRY

N. Puniran | D.C. Close | S.A. Bound | R. Corkrey | M.D. Whiting

133. TRANSCRIPTOME ANALYSIS OF THE DIFFERENTIAL EFFECTS OF 1-MCP ON THE DEVELOPMENT OF CHILLING INJURY IN PEACHES HARVESTED AT EARLY AND LATE MATURITIES

134. EFFECT OF COLD STORAGE DURATION ON SHELF QUALITY ATTRIBUTES OF ‘BING’ AND FIVE SWEET CHERRY CULTIVARS DEVELOPED IN THE SUMMERLAND BREEDING PROGRAM

P.M.A. Toivonen | F. Kappel

135. METABOLOMICS APPROACH TO STUDYING MINIMALLY PROCESSED PEACH (PRUNUS PERSICA) FRUIT

R. Tosetti | F. Martinelli | P. Tonutti | D.K. Barupal

136. POSTHARVEST PERFORMANCE OF PEACH AND NECTARINE GRAFTED ON SEVEN ROOTSTOCKS

J. Castro | C. Sotomayor | T. Jackson

137. EFFECT OF DIFFERENT STORAGE CONDITIONS ON NUTRITIONAL AND QUALITY PARAMETERS OF ‘SWEETHEART’ CHERRY

138. SUTURE SOFTENING AND SUGAR METABOLISM IN PEACH (PRUNUS PERSICA L. BATCH ‘OKUBO’)

Z. Liu | H. Ma | X. Jia

139. PACKAGING TO PRESERVE ”AURORA-1′ PEACHES FROM TWO MATURITY STAGES

L.C. Cunha Junior | B.H. Mattiuz | C.F.M. Mattiuz

140. INFLUENCE OF CELL WALL CALCIUM CONTENT IN FRUIT FIRMNESS DURING THE RIPENING OF PLUMS (PRUNUS DOMESTICA L.)

141. SKIN COLOUR CHANGES IN FRUITS OF TWO SWEET CHERRY CULTIVARS, ITS HETEROGENEITY AND RELATIONSHIP WITH QUALITY INDICES

A. Yommi | V. Fernandez | N. Guerra | G. Cendoya | V. Quillehauquy

142. CHANGES IN THE CHEMICAL COMPOSITION OF SEVERAL PEACH CULTIVARS (PRUNUS PERSICA L.) DURING COLD STORAGE

J. Cano | L. López | G. Echeverría

143. RADIATION, YIELD, AND FRUIT QUALITY OF ‘GALA’ APPLES GROWN UNDER WHITE HAIL PROTECTION NETS

C.V.T. Amarante | C.A. Steffens | L.C. Argenta

144. INFLUENCE OF VOLATILE COMPOUND EMISSIONS AND STANDARD QUALITY ON CONSUMER ACCEPTANCE OF PEACHES AND NECTARINES

G. Echeverría | J. Cano | L. López | G. Alins

145. EFFECTS OF PRE-STORAGE AT 20°C ON THE STANDARD, SENSORY AND AROMA QUALITY OF ‘BIG TOP^®‘ NECTARINES

L. López | J. Cano | G. Echeverría | G. Alins

146. PRE-STORAGE CONDITIONING OF NON-MELTING FLESH PEACHES USING DIRECTED HEAT STRESS ALONE OR COMBINED WITH 1-METHYLCYCLOPROPENE TO MAINTAIN FRUIT QUALITY DURING POSTHARVEST HANDLING

M.S. Kao | J.K. Brecht | D.J. Huber

147. WATERCORE DISSIPATION IN ‘FUJI’ APPLES BY POSTHARVEST TEMPERATURE CONDITIONING TREATMENTS

D.A. Neuwald | D. Kittemann | J. Streif | C.A.W. Andrade

148. EFFECT OF COLD ACCLIMATION TREATMENT AND EXOGENOUS ETHYLENE TREATMENT ON WOOLLINESS RELATED ENZYMES ON ‘OKUBO’ PEACH FRUITS DURING LOW TEMPERATURE STORAGE

Y.X. Li | G.X. Wang | L.S. Liang

149. CELL WALL CHARACTERISATION OF CRACKING-AFFECTED ‘SNOW QUEEN’ NECTARINES

A. Ortiz | G. Seymour | G. Tucker | I. Lara

150. FRUIT QUALITY, COLOUR DEVELOPMENT AND INDEX OF ABSORBANCE DIFFERENCE (I_AD) OF DIFFERENT NECTARINE CULTIVARS AT DIFFERENT HARVEST DATES

G. Reig | S. Alegre | I. Iglesias | G. Echeverría | F. Gatius

151. QUALITY EVALUATION OF ‘SUNBURST’ CHERRIES HARVESTED AT DIFFERENT RIPENESS STAGES

A.C. Agulheiro-Santos | V. Palma | G. Machado | A.E. Rato | M.J. Cabrita

152. DETECTION OF MEALINESS IN TOMATO BY TEXTURAL ANALYSIS

153. PREDICTION OF SPINACH QUALITY BASED ON PRE- AND POSTHARVEST CONDITIONS

E. Gutiérrez-Rodríguez | J.H. Lieth | J.A. Jernstedt | T.V. Suslow

154. EFFECT OF DIFFERENT PRE-COOLING, PACKAGING AND COLD STORAGE TREATMENTS ON QUALITY OF BROCCOLI

L. Yan | S. Liu

155. PRE-HARVEST H₂O₂ APPLICATION AFFECTS POSTHARVEST QUALITY OF GREENHOUSE-GROWN SWEET PEPPERS

W.C. Lin | G.S. Block | D.L. Ehret

156. INFLUENCE OF PLANTING DATE AND MULCHING ON SOME QUALITATIVE TRAITS OF PROCESSED TOMATOES

157. MAIN CHARACTERISTICS OF POLYPHENOL OXIDASE FROM ASPARAGUS LETTUCE

X. Yue | G.L. Chen

158. ETHYLENE EXPOSURE AFTER DORMANCY BREAK IS AS EFFECTIVE AS CONTINUOUS ETHYLENE TO CONTROL SPROUT GROWTH IN SOME UK-GROWN POTATO CULTIVARS

S.G. Foukaraki | G.A. Chope | L.A. Terry

159. QUALITY OF ITALIAN TOMATO FRUIT FROM ORGANIC AND CONVENTIONAL PRODUCTION SYSTEMS AND STORED AT TWO TEMPERATURES

N. Botrel | F.V. Resende | B.S.F. Leite | R.C.M.R. Nassur | E.V.B. Vilas Boas

160. QUALITY OF TOMATOES PRODUCED WITH DIFFERENT DOSES OF ORGANIC COMPOST

R.C.M.R. Nassur | E.V.B. Vilas Boas | N. Botrel | F.V. Resende | B.S.F. Leite

161. THE EFFECTS OF BLANCHING ON BIOLOGICAL VALUE OF ENDIVE (CICHORIUM ENDIVIA L.)

K. Adamczewska-Sowińska | C.M. Uklańska

162. COLOR AND OTHER QUALITY ASPECTS OF TOMATO FRUITS SUBJECTED TO A SHORT PERIOD OF INDUCED COMPRESSION

G.H.H. Oliveira | P.C. Corrêa | F.L. Finger | R.L. Freitas | D.S.L. Vasconcellos

163. QUALITY INDICES CHANGES IN PETIOLES OF CELERY (APIUM GRAVEOLENS L.) HARVESTED AT DIFFERENT PHYSIOLOGICAL STAGES

164. A METHOD FOR DETECTING THE SPOILAGE MICROBE MYCOCENTROSPORA ACERINA IN CARROT PRODUCTION FOR INDUSTRY

T.-L. Laamanen | T. Suojala-Ahlfors | P. Parikka | H.-R. Kymäläinen | M. Lehto

165. MICROWAVE APPLICATION FOR BLANCHING AND DRYING OF COOKING TOMATO

166. SANITATION OF MUSHROOM (AGARICUS BISPORUS) WITH UV-C LIGHT

B. Ozcoz | J. Barriobero | E. Róth | R. López | C. Urbina

167. UV-C INDUCED DISEASE RESISTANCE AND DELAYED RIPENING IN TOMATO FRUIT WITH PRIOR EXPOSURE TO SELECTED STORAGE STRESSES

R. Corcuff | R. Muvunyi | S. Bourget | J. Arul

168. POSTHARVEST QUALITY AND ANTIOXIDANT ACTIVITY OF MINI SWEET PEPPERS AS AFFECTED BY SEVERAL TYPES OF BULK PACKAGING

Z.S. Ilić | Z. Aharon | Y. Perzelan | SH. Alkalai-Tuvia | E. Fallik

169. EFFECT OF PRESSURE PRE-COOLING, ROOM PRE-COOLING AND COLD STORAGE ON QUALITY OF SWEET CORN

S. Liu | H. Zhang | S. Zheng

170. EFFECT OF THE DIMENSION OF MECHANICAL INJURY ON THE RESPIRATION OF TOMATOES

A.S. de Paiva | J.D.C. Pessoa | A.G. Calbo | M.C.M. Carneiro | A.L.S. Albino

171. OPTIMISATION OF THE POSTHARVEST CHAIN FOR WHOLE AND FRESH-CUT CAULIFLOWER

172. IMPACT OF WATER HEAT TREATMENT ON PHYSICAL-CHEMICAL, BIOCHEMICAL AND MICROBIOLOGICAL QUALITY OF WHOLE TOMATO (SOLANUM LYCOPERSICUM) FRUIT

173. EFFECT OF LIGHTNESS AND DARKNESS ON RESPIRATION RATE OF VEGETABLES

C. Cunkun | G. Yuanhui | W. Wensheng | D. Chenghu

174. OPTIMIZATION, HEAT STABILITY AND KINETIC CHARACTERIZATION OF PECTIN¬METHYLESTERASE ENZYME FROM TOMATO (SOLANUM LYCOPERSICUM ‘ZINAC’) FRUITS

J. Pinheiro | C.L.M. Silva | C. Alegria | M. Abreu | E.M. Gonçalves

175. RELATIONSHIP BETWEEN PECTIN-METHYL ESTERASE ACTIVITY AND SOFTENING IN ‘RAF’ TOMATO FRUIT

M. Guzmán | A. Sánchez | M.C. Salas | F. del Moral | J.L. Valenzuela

176. DO QUERCETIN GLUCOSIDES GOVERN SKIN COLOUR CHANGES IN BROWN ONION (ALLIUM CEPA L.) BULBS DURING CURING?

K. Cools | G.A. Chope | L.A. Terry

177. EVALUATION OF THE IMPACT OF HOT WATER TREATMENT ON THE SENSORY QUALITY OF FRESH TOMATOES

F.E. Loayza | J.K. Brecht | A. Plotto | E.A. Baldwin | J. Bai

178. SENSORY PROFILE OF STORED SWEET CORN

F.L. Cuquel | A.F. Mogor | C.F.S. Oliveira | R.P. Bolzan | O.J. Lavoranti

179. EFFECTS OF AUXIN-INDUCED PARTHENOCARPY ON ETHYLENE PRODUCTION AND POSTHARVEST QUALITY ATTRIBUTES OF ZUCCHINI FRUIT

180. POSTHARVEST STORAGE SYSTEMS AFFECT PHYTOCHEMICAL CONTENT AND QUALITY OF TRADITIONAL PORTUGUESE ONION CULTIVARS

A.S. Rodrigues | D.P.F. Almeida | M.S. García-Falcón | J. Simal-Gándara | M.R. Pérez-Gregorio

181. THE EFFECT OF CA STORAGE ON QUALITY PARAMETERS OF SHALLOT (ALLIUM ASCALONICUM L.) BULBS

M.T. Bajer | M. Gajewski

182. EFFECT OF PHYSICAL CHARACTERISTICS ON THE TRANSPIRATION RATE OF CARROTS DURING STORAGE

183. EFFECT OF PRE- AND POSTHARVEST FACTORS ON SPLITTING IN RADISH (RAPHANUS SATIVUS)

J.M. Monaghan | T. Chiramba | L.M. Mogren