Development-related changes in decay susceptibility and polygalacturonase inhibitor content of “Bartlett” pear fruit

1983 ◽  
Vol 23 (1) ◽  
pp. 101-109 ◽  
Author(s):  
A.A. Abu-Goukh ◽  
L.L. Strand ◽  
J.M. Labavitch
Keyword(s):  
Pear Fruit

scholarly journals Rapid Detection and Quantification of Patulin and Citrinin Contamination in Fruits

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4545
Author(s):  
Sudharsan Sadhasivam ◽  
Omer Barda ◽  
Varda Zakin ◽  
Ram Reifen ◽  
Edward Sionov
Keyword(s):  
High Performance ◽  
Cost Effective ◽  
Hplc Method ◽  
Pear Fruit ◽  
Cost Effective Method ◽  
Fruit Samples ◽  
Pome Fruits ◽  
Reliable Methods ◽  
By Products ◽  
Detection And Quantification

Patulin (PAT) and citrinin (CTN) are the most common mycotoxins produced by Penicillium and Aspergillus species and are often associated with fruits and fruit by-products. Hence, simple and reliable methods for monitoring these toxins in foodstuffs are required for regular quality assessment. In this study, we aimed to establish a cost-effective method for detection and quantification of PAT and CTN in pome fruits, such as apples and pears, using high-performance liquid chromatography (HPLC) coupled with spectroscopic detectors without the need for any clean-up steps. The method showed good performance in the analysis of these mycotoxins in apple and pear fruit samples with recovery ranges of 55–97% for PAT and 84–101% for CTN, respectively. The limits of detection (LOD) of PAT and CTN in fruits were 0.006 µg/g and 0.001 µg/g, while their limits of quantification (LOQ) were 0.018 µg/g and 0.003 µg/g, respectively. The present findings indicate that the newly developed HPLC method provides rapid and accurate detection of PAT and CTN in fruits.

scholarly journals The MIR-Domain of PbbHLH2 Is Involved in Regulation of the Anthocyanin Biosynthetic Pathway in ”Red Zaosu” (PyrusBretschneideri Rehd.) Pear Fruit

2021 ◽  
Vol 22 (6) ◽  
pp. 3026
Author(s):  
Xieyu Li ◽  
Fangxin Xiang ◽  
Wei Han ◽  
Bingqing Qie ◽  
Rui Zhai ◽  
...  
Keyword(s):  
Biosynthetic Pathway ◽  
Anthocyanin Biosynthesis ◽  
Bimolecular Fluorescence Complementation ◽  
Anthocyanin Content ◽  
Pear Fruit ◽  
Fruit Peel ◽  
Interaction Domain ◽  
Dihydroflavonol Reductase ◽  
Anthocyanin Biosynthetic Pathway ◽  
R2r3 Myb

The N-terminal of Myc-like basic helix-loop-helix transcription factors (bHLH TFs) contains an interaction domain, namely the MYB-interacting region (MIR), which interacts with the R2R3-MYB proteins to regulate genes involved in the anthocyanin biosynthetic pathway. However, the functions of MIR-domain bHLHs in this pathway are not fully understood. In this study, PbbHLH2 containing the MIR-domain was identified and its function investigated. The overexpression of PbbHLH2 in ”Zaosu” pear peel increased the anthocyanin content and the expression levels of late biosynthetic genes. Bimolecular fluorescence complementation showed that PbbHLH2 interacted with R2R3-MYB TFs PbMYB9, 10, and 10b in onion epidermal cells and confirmed that MIR-domain plays important roles in the interaction between the MIR-domain bHLH and R2R3-MYB TFs. Moreover, PbbHLH2 bound and activated the dihydroflavonol reductase promoter in yeast one-hybrid (Y1H) and dual-luciferase assays. Taken together these results suggested that the MIR domain of PbbHLH2 regulated anthocyanin biosynthesis in pear fruit peel.

Simultaneous measurement of oxygen and carbon dioxide diffusivity in pear fruit tissue

2003 ◽  
Vol 29 (2) ◽  
pp. 155-166 ◽  
Author(s):  
W Schotsmans ◽  
B.E Verlinden ◽  
J Lammertyn ◽  
B.M Nicolaı̈
Keyword(s):  
Carbon Dioxide ◽  
Simultaneous Measurement ◽  
Pear Fruit ◽  
Fruit Tissue

Pilot-scale production of cloudy juice from low-quality pear fruit under low-oxygen conditions

2015 ◽  
Vol 173 ◽  
pp. 827-837 ◽  
Author(s):  
Domien De Paepe ◽  
Katleen Coudijzer ◽  
Bart Noten ◽  
Dirk Valkenborg ◽  
Kelly Servaes ◽  
...  
Keyword(s):  
Pilot Scale ◽  
Scale Production ◽  
Low Oxygen ◽  
Pear Fruit ◽  
Pilot Scale Production ◽  
Oxygen Conditions

Purification and characterization of two soluble acid invertase isozymes from Japanese pear fruit

2003 ◽  
Vol 63 (2) ◽  
pp. 125-129 ◽  
Author(s):  
Hiroshi Hashizume ◽  
Koji Tanase ◽  
Katsuhiro Shiratake ◽  
Hitoshi Mori ◽  
Shohei Yamaki
Keyword(s):  
Acid Invertase ◽  
Japanese Pear ◽  
Pear Fruit ◽  
Purification And Characterization ◽  
Soluble Acid Invertase ◽  
Soluble Acid

scholarly journals Effect of High Temperature on Calcium Uptake by Suspension-Cultured Pear Fruit Cells

1987 ◽  
Vol 84 (1) ◽  
pp. 153-156 ◽  
Author(s):  
Joshua D. Klein ◽  
Ian B. Ferguson
Keyword(s):  
High Temperature ◽  
Calcium Uptake ◽  
Pear Fruit

Monitoring gene expression along pear fruit development, ripening and senescence using cDNA microarrays

Plant Science ◽  
2004 ◽  
Vol 167 (3) ◽  
pp. 457-469 ◽  
Author(s):  
Sandra Fonseca ◽  
László Hackler ◽  
Ágnes Zvara ◽  
Sı́lvia Ferreira ◽  
Aladje Baldé ◽  
...  
Keyword(s):  
Gene Expression ◽  
Fruit Development ◽  
Cdna Microarrays ◽  
Pear Fruit ◽  
Monitoring Gene Expression

scholarly journals The use of the nonlinear models in the growth of pears of ‘Shinseiki’ cultivar

2017 ◽  
Vol 48 (1) ◽  
Author(s):  
Thais Destefani Ribeiro ◽  
Taciana Villela Savian ◽  
Tales Jesus Fernandes ◽  
Joel Augusto Muniz
Keyword(s):  
Logistic Model ◽  
Least Squares Method ◽  
Nonlinear Models ◽  
Logistic Models ◽  
Information Criterion ◽  
Fruit Weight ◽  
Coefficient Of Determination ◽  
Pear Fruit ◽  
Asian Pear ◽  
Residual Correlations

ABSTRACT: The goal of this study was to elucidate the growth and development of the Asian pear fruit, on the grounds of length, diameter and fresh weight determined over time, using the non-linear Gompertz and Logistic models. The specifications of the models were assessed utilizing the R statistical software, via the least squares method and iterative Gauss-Newton process (DRAPER & SMITH, 2014). The residual standard deviation, adjusted coefficient of determination and the Akaike information criterion were used to compare the models. The residual correlations, observed in the data for length and diameter, were modeled using the second-order regression process to render the residuals independent. The logistic model was highly suitable in demonstrating the data, revealing the Asian pear fruit growth to be sigmoid in shape, showing remarkable development for three variables. It showed an average of up to 125 days for length and diameter and 140 days for fresh fruit weight, with values of 72mm length, 80mm diameter and 224g heavy fat.

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