Impact of pH and Total Soluble Solids on Enzyme Inactivation Kinetics during High Pressure Processing of Mango (Mangifera indica) Pulp

2015 ◽  
Vol 80 (11) ◽  
pp. E2459-E2470 ◽  
Author(s):  
Neelima Kaushik ◽  
Tejaswi Nadella ◽  
P. Srinivasa Rao
Keyword(s):  
High Pressure ◽  
Mangifera Indica ◽  
High Pressure Processing ◽  
Enzyme Inactivation ◽  
Soluble Solids ◽  
Inactivation Kinetics ◽  
Total Soluble Solids

Effect of High-Pressure Processing and Nisin on Microbial Inactivation and Quality of Avocado Dressing

2020 ◽  
Vol 63 (4) ◽  
pp. 1099-1107
Author(s):  
Manolya E. Oner
Keyword(s):  
High Pressure ◽  
Flow Behavior ◽  
High Pressure Processing ◽  
Microbial Inactivation ◽  
Soluble Solids ◽  
List Type ◽  
Total Soluble Solids ◽  
E Coli ◽  
Log Reduction ◽  
Solids Content

HighlightsA =7-log reduction of E. coli and L. innocua was accomplished using HPP at 600 MPa for 3 min.There was a synergy between HPP and nisin in all treatments to inactivate both E. coli and L. innocua.HPP and nisin did not affect the color, pH, and total soluble solids content of avocado dressing.Viscosity measurements of avocado dressing samples after HPP showed a good fit to a power-law model.Abstract. The effect of high-pressure processing (HPP) (200, 300, 400, 500, and 600 MPa) and nisin (0, 100, and 200 ppm) on L. innocua and E. coli inactivation and on the color, pH, TSS, and viscosity of avocado dressing was investigated. HPP at 600 MPa for 3 min resulted in 7 log CFU mL-1 reductions of both L. innocua and E. coli in avocado dressing. Combining HPP at =500 MPa with 100 ppm nisin exhibited significant additional L. innocua and E. coli inactivation, indicating high synergy between HPP and nisin. Pressure levels up to 600 MPa did not affect the color, pH, and total soluble solids of avocado dressing. The avocado dressing followed pseudoplastic flow behavior, and the viscosity of the samples decreased with increasing pressure and temperature. HPP was effective in controlling E. coli and L. innocua in avocado dressing without significant quality loss. Keywords: Color, Escherichia coli, High-pressure processing, Listeria innocua, Nisin, Viscosity.

scholarly journals Inactivation of a Norovirus by High-Pressure Processing

2006 ◽  
Vol 73 (2) ◽  
pp. 581-585 ◽  
Author(s):  
David H. Kingsley ◽  
Daniel R. Holliman ◽  
Kevin R. Calci ◽  
Haiqiang Chen ◽  
George J. Flick
Keyword(s):  
High Pressure ◽  
Pressure Range ◽  
Room Temperature ◽  
Initial Temperature ◽  
High Pressure Processing ◽  
Inactivation Kinetics ◽  
Virus Inactivation ◽  
Pressure Treatment ◽  
Murine Norovirus ◽  
Human Norovirus

ABSTRACT Murine norovirus (strain MNV-1), a propagable norovirus, was evaluated for susceptibility to high-pressure processing. Experiments with virus stocks in Dulbecco's modified Eagle medium demonstrated that at room temperature (20°C) the virus was inactivated over a pressure range of 350 to 450 MPa, with a 5-min, 450-MPa treatment being sufficient to inactivate 6.85 log10 PFU of MNV-1. The inactivation of MNV-1 was enhanced when pressure was applied at an initial temperature of 5°C; a 5-min pressure treatment of 350 MPa at 30°C inactivated 1.15 log10 PFU of virus, while the same treatment at 5°C resulted in a reduction of 5.56 log10 PFU. Evaluation of virus inactivation as a function of treatment times ranging from 0 to 150 s and 0 to 900 s at 5°C and 20°C, respectively, indicated that a decreasing rate of inactivation with time was consistent with Weibull or log-logistic inactivation kinetics. The inactivation of MNV-1 directly within oyster tissues was demonstrated; a 5-min, 400-MPa treatment at 5°C was sufficient to inactivate 4.05 log10 PFU. This work is the first demonstration that norovirus can be inactivated by high pressure and suggests good prospects for inactivation of nonpropagable human norovirus strains in foods.

scholarly journals 720 PB 432 THE EFFECT OF APPLYING CALCIUM ON THE RIPENING OF MANGO FRUITS (Mangifera indica L)

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 536c-536
Author(s):  
Judith Zambrano ◽  
Juan Manzano
Keyword(s):  
Ascorbic Acid ◽  
Mangifera Indica ◽  
Quality Parameters ◽  
Total Sugar ◽  
Soluble Solids ◽  
Mango Fruit ◽  
Total Soluble Solids ◽  
Titrable Acidity ◽  
Postharvest Application ◽  
Significant Difference

The effect of applying Ca++ in two forms: infiltration and dipping on mango fruit cv `Haden' was investigated. This effect was evaluated by measuring some quality parameters in the flesh and in the skin of the fruit. It was found that postharvest application of Ca++ extent the storage life of the fruit by a week. This fact, together with the results obtained from the quantification of sugars, ascorbic acid, total soluble solids alcohol. insoluble solids, starch and titrable acidity seem to indicate that the application of Ca++ delays slightly the process associated with ripeness. Furthermore, no significant difference between the two forms of Ca++ applied was found, except for the amount of ascorbic acid and total sugar. Finally, dipping application of Ca++ is easier than infiltration and it is therefore suggested.

scholarly journals Effects of Thermal and High-Pressure Processing on Quality Features and the Volatile Profiles of Cloudy Juices Obtained from Golden Delicious, Pinova, and Red Delicious Apple Cultivars

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3046
Author(s):  
Claudia Maria Liberatore ◽  
Martina Cirlini ◽  
Tommaso Ganino ◽  
Massimiliano Rinaldi ◽  
Silvia Tomaselli ◽  
...  
Keyword(s):  
High Pressure ◽  
Thermal Treatment ◽  
Time Pressure ◽  
Titratable Acidity ◽  
High Pressure Processing ◽  
Soluble Solids ◽  
Volatile Profile ◽  
Stabilization Treatment ◽  
Golden Delicious ◽  
Apple Cultivars

In this study, juices extracted from three apple cultivars (Golden Delicious, Pinova, and Red Delicious) were stabilized by means of thermal treatment (TT) and high-pressure processing (HPP, 600 MPa 3 min); pH, total titratable acidity, total soluble solids content, color, and viscosity, as well as volatile profile, were investigated. Qualitative characteristics (pH, titratable acidity, colorimetric parameters, viscosity, and volatile profile) results were significantly influenced by both cultivars and treatments; for example, juice viscosity greatly increased after HPP treatment for Golden Delicious, and after both TT and HPP for Pinova, while no influence of stabilization treatment was registered for Red Delicious juices. Regarding the volatile profile, for Golden Delicious cultivar, HPP treatment determined an increase in volatile compounds for most of the classes considered, leading to a supposed quality implementation. For the other two cultivars, the stabilization treatment that better preserved the volatile profile was the HPP one, even if the results were quite similar to the thermal treatment. Further studies are needed to evaluate different time/pressure combinations that could give better results, depending on the specific apple cultivar.

scholarly journals Effect of Plant Based Preservatives on Shelf Life and Quality of Mango Fruits (Mangifera indica) During Storage

2019 ◽  
pp. 1-11
Author(s):  
Augustin Schinzoumka Passannet ◽  
Jean Aghofack-Nguemezi ◽  
Donatien Gatsing
Keyword(s):  
Shelf Life ◽  
Mangifera Indica ◽  
Zingiber Officinale ◽  
Distribution Networks ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Total Soluble Solids ◽  
Weight Losses ◽  
Solids Content ◽  
And Control

Mango is one of the main fruits grown in Chad. However, it is prone to high post-harvest losses due to lack of adequate distribution networks, appropriate harvesting and conservation methods. The objective of this study was to test the effectiveness of coatings based on extracts of Allium sativum (garlic), Zingiber officinale (ginger) and Spirulina platensis (spirulina) on their conservation. Shelf life, weight loss, firmness, pH and total soluble solids content of mangoes were evaluated. The coated mangoes had excellent brillance compared to control mangoes. The coatings based on the extracts of A. sativum, S. platensis and Z. officinale increased respectively the means shelf life of mangoes to 18, 19 and 24 days. Weight losses were 21% for control mangoes while they were 13% for mangoes coated using mixture containing extracts of A. sativum and S. platensis and 11% for mangoes coated with Z. officinale. Coatings based on extracts of Z. officinale and S. platensis had statistically comparable effects on the firmness of mangoes but significantly higher than those of A. sativum extracts and controls after the 10th day. pH values and total soluble solids content (TSSC) values of control mangoes were significantly higher than those of coated mangoes. On day 10 after treatment, chlorophylls were absent from the peel of control mangoes whereas they were still present in the peel of coated mangoes. The mangoes coated with extract of Z. officinale reached a shelf life of 24 days. This shelf life was significantly higher than that of mangoes coated with other types of extracts and control mangoes. The coating with Z. officinale extract slowed considerably the ripening of mangoes. It can be recommended for conservation of mangoes in fresh.

scholarly journals Characterization of mango (Mangifera indica L.) genotypes based on physio-chemical quality attributes

2017 ◽  
Vol 9 (4) ◽  
pp. 2199-2204
Author(s):  
Lokesh Bora ◽  
A. K. Singh ◽  
C. P. Singh
Keyword(s):  
Mangifera Indica ◽  
Quality Attributes ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Chemical Quality ◽  
Fruit Crops ◽  
Total Soluble Solids ◽  
Climatic Regions

Evaluation of fruit crops has been successfully utilized for studying the performance of varieties under different agro climatic regions time to time. In the present study cultivars were characterized on the basis of their physico-biochemical attributes. “Mallika” and “Neelgoa” were found superior in terms of fruit weight (321.87 g), size (12.55 cm, 8.13 cm), pulp weight (257.91 g) and pulp stone ratio (7.71) respectively. “Mallika” excelled in terms of sugar (20.82), while “Amrapali” in carotenoids (8.38 mg/100 g). Among them, Mallika (22.41◦B) possessed the high-est amount of total soluble solids while lowest amount in Langra (16.90 ◦B) whereas maximum titrable. The study shows the potential of Amrapali in terms of its quality, being late can meet the demand for later period when no other cultivar is available.

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