Inhibitory mechanism of low-oxygen-storage treatment in postharvest internal bluing of radish (Raphanus sativus) roots

2021 ◽  
pp. 130423
Author(s):  
Xiaoyan Zhao ◽  
Yaqian Zhang ◽  
Yue Ma ◽  
Li Zhang ◽  
Ying Jiang ◽  
...  
Keyword(s):  
Raphanus Sativus ◽  
Oxygen Storage ◽  
Inhibitory Mechanism ◽  
Low Oxygen ◽  
Storage Treatment

Smart post-harvest technology to maintain quality and safety in fresh produce supply chains

2021 ◽  
pp. 325-344
Author(s):  
James Monaghan ◽  
Keyword(s):  
Internet Of Things ◽  
Fresh Produce ◽  
Modified Atmosphere Packaging ◽  
Oxygen Storage ◽  
Controlled Atmosphere ◽  
Quality And Safety ◽  
Environmental Sensors ◽  
Low Oxygen ◽  
Postharvest Management ◽  
Smart Technologies

In this chapter the main challenges for the postharvest management of fresh produce are summarised. Key areas where the use of new smart technologies can improve crop management are explored, starting with how environmental sensors can be integrated into internet of things (IoT) systems with potential for use in the fresh produce supply chain. The next section summarises how the implementation of low oxygen storage environments is being refined through the use of dynamic controlled atmosphere systems incorporating sensor technologies. Modified atmosphere packaging and the developing field of active and intelligent packaging for fresh produce is then discussed. The chapter ends with future options for how smart technologies may develop in this sector.

Impact of low oxygen storage on quality attributes including pigments and volatile compounds in ‘Shelly’ mango

2019 ◽  
Vol 250 ◽  
pp. 174-183 ◽  
Author(s):  
Makgafele Lucia Ntsoane ◽  
Alexandru Luca ◽  
Manuela Zude-Sasse ◽  
Dharini Sivakumar ◽  
Pramod V. Mahajan
Keyword(s):  
Volatile Compounds ◽  
Quality Attributes ◽  
Oxygen Storage ◽  
Low Oxygen

Shelf-life of ‘Golden Reinders’ Apples after Ultra Low Oxygen Storage: Effect on Aroma Volatile Compounds, Standard Quality Parameters, Sensory Attributes and Acceptability

2009 ◽  
Vol 15 (5) ◽  
pp. 481-493 ◽  
Author(s):  
R. Altisent ◽  
G. Echeverría ◽  
I. Lara ◽  
M.L. López ◽  
J. Graell
Keyword(s):  
Shelf Life ◽  
Volatile Compounds ◽  
Principal Component ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
Sensory Attributes ◽  
Soluble Solids ◽  
Oxygen Storage ◽  
Low Oxygen ◽  
Maturity Stages

The aim of this work was to estimate shelf-life potential and understand quality characteristics of ‘Golden Reinders’ apples during ripening after storage under ultra low oxygen (ULO) atmosphere. Fruits, corresponding to two different maturity stages (147 and 155 dafb), were kept at 1 °C in ULO atmosphere (1 kPa O2: 1 kPa CO2) for seven months and subsequently kept at 1 °C in regular air for up to 28 days. Sub-batches were removed weekly and transferred to 20 °C, so that the shelf-life periods at room temperature were 28, 21, 14, 7, and 0 days. Fruit from both maturity stages showed firmness and soluble solids content (SSC) values above the minimum commercial requirements for this variety throughout the post-storage ripening period. However, only earlier harvested fruit maintained high levels of titratable acidity (TA). Production of aroma volatile compounds was low for shorter ripening periods, though it increased progressively as ripeness advanced. Principal component analysis showed the variables that positively influenced acceptability were: octyl acetate, hexyl octanoate, butyl propanoate, propyl pentanoate, and 6-methyl-5-hepten-2-one as aroma volatile compounds; SSC, TA, firmness, and epidermis colour (Hue) as physicochemical parameters; and sourness and sensory firmness as sensory attributes. From a general overview, the optimum shelf-life period for ‘Golden Reinders’ apples would be between 7 and 14 days for both maturity stages.

Low oxygen pre-storage treatment is effective in reducing chilling injuries of deciduous fruit

2014 ◽  
Vol 4 (1) ◽  
pp. 23 ◽  
Author(s):  
Edna Pesis ◽  
Oleg Feygenberg ◽  
Revital Sabban Amin ◽  
Susan E. Ebeler ◽  
Elizabeth J. Mitcham ◽  
...  
Keyword(s):  
Low Oxygen ◽  
Storage Treatment ◽  
Deciduous Fruit

scholarly journals THE HEMOGLOBIN OF THE SEA LAMPREY, PETROMYZON MARINUS

1951 ◽  
Vol 35 (1) ◽  
pp. 45-53 ◽  
Author(s):  
George Wald ◽  
Austen Riggs
Keyword(s):  
Petromyzon Marinus ◽  
Oxygen Affinity ◽  
Sea Lamprey ◽  
Oxygen Storage ◽  
Low Oxygen ◽  
Blood Hemoglobin ◽  
Oxygen Dissociation ◽  
Vertebrate Muscle ◽  
Oxygen Equilibrium Curve ◽  
Low Oxygen Affinity

The blood hemoglobin of the sea lamprey presents a curious mixture of primitive and highly specialized properties. Like muscle hemoglobin, it has a molecular weight of about 17,000, and apparently contains a single heme. Its isoelectric point is like that of a typical invertebrate hemoglobin. Its amino acid composition is partly characteristic of invertebrate) partly of vertebrate hemoglobins (Pedersen; Roche and Fontaine). In the present experiments, the oxygen equilibrium curve of this pigment was measured at several pH's. As expected, it is a rectangular hyperbola, the first such function to be observed in a vertebrate blood hemoglobin. Other hemoglobins known to possess this type of oxygen dissociation curve—those of vertebrate muscle, the worm Nippostrongylus, and the bot-fly larva—appear to serve primarily the function of oxygen storage rather than transport. Lamprey hemoglobin on the contrary is an efficient oxygen-transporting agent. It achieves this status by having, unlike muscle hemoglobin, a relatively low oxygen affinity, and a very large Bohr effect. In these properties it rivals the most effective vertebrate blood hemoglobins.

Influence of low oxygen storage on aroma compounds of whole pears and crushed pear flesh

2000 ◽  
Vol 19 (3) ◽  
pp. 279-285 ◽  
Author(s):  
Christian Chervin ◽  
Jim Speirs ◽  
Brian Loveys ◽  
Brian D Patterson
Keyword(s):  
Aroma Compounds ◽  
Oxygen Storage ◽  
Low Oxygen

scholarly journals PHYSIOLOGICAL AND CELL WALL METABOLIC RESPONSES OF GRANNY SMITH APPLES TO LOW OXYGEN STORAGE.

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1090G-1090
Author(s):  
Marius Huysamer ◽  
John M. Labavitch ◽  
Adel A. Kader
Keyword(s):  
Ethylene Production ◽  
Titratable Acidity ◽  
Ambient Air ◽  
Water Soluble ◽  
Soluble Solids ◽  
Oxygen Storage ◽  
Degree Of Hydrolysis ◽  
Low Oxygen ◽  
Production Rates ◽  
Neutral Sugars

Commercially grown Granny Smith apples were stored at 0°C in air or 1% O2, and 2 sets of samples were taken every 4 weeks over a 28 week period. One set was immediately analysed for weight loss, firmness, color, soluble solids, pH and titratable acidity. Alcohol-insoluble substances were analysed for starch, water-soluble uronides, water-insoluble uronides, cellulose and neutral sugars. The second set of samples was kept in air at 20°C for an additional week, during which respiration and ethylene production rates were measured, prior to the above analyses. Storage in 1% O2 led to the improved maintenance of firmness, reduced respiration and ethylene production rates in ambient air, and a reduced content of water-soluble uronides, suggesting a reduced degree of hydrolysis. The correlation between firmness and water-soluble uronide content was not very strong. The predominant neutral sugars present in the wall were arabinose and galactose, and activities of putative hydrolyses that may be involved in the metabolism of polymers containing these sugars will be discussed.

scholarly journals 132 Semi-commercial-scale Ultra-low Oxygen Storage for Disinfestation of Mexican Fruit Fly in Grapefruit

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 412B-412
Author(s):  
Krista C. Shellie ◽  
Ken Rodde
Keyword(s):  
Fruit Fly ◽  
Oxygen Storage ◽  
Treatment Schedule ◽  
Low Oxygen ◽  
Mexican Fruit Fly ◽  
Oxygen Control ◽  
Free Standing ◽  
C Storage ◽  
Fly Larvae ◽  
And Control

A treatment schedule for disinfesting grapefruit of Mexican fruit fly with refrigerated (14 °C) storage for 21 days in ultra-low oxygen (0.05 kPa) was tested using a fully loaded, 24-ft sea freight container. The objective of this research was 3-fold: 1) evaluate the ability of a free standing Electronic Oxygen Control system to maintain 500 ppm of oxygen for 21 days inside the sealed container, 2) evaluate the mortality of third instar Mexican fruit fly larvae stored for 21 days inside the sealed container, and 3) evaluate fruit market quality after 21 days inside the container. The container was loaded with 17 pallets of red-fleshed, `Rio Star' grapefruit. Three boxes from each pallet were evaluated for fruit quality (decay (%), visible disorders (%)) after 21 days of treatment and again after 14 additional days of storage in air at 10 °C. Four cartons, each containing 24 fruit infested with third instar, Mexican fruit fly larvae, were each placed on top of a pallet in four different container locations. Upon completion of treatment, larvae were evaluated for survival. In the first replication, no fruit fly larvae survived the low oxygen treatment. In the second replication, oxygen concentration was less controlled, and 60 pupae survived the treatment. Treated and control grapefruit had similar incidence of decay when the treatment was terminated, however no sporulation was observed in fruit stored under ultra-low oxygen. Grapefruit exposed to ultra-low oxygen had a higher incidence of visible disorders, consisting of darkened, sunken areas on the fruit surface. It is unclear whether this damage is attributed to fluctuating levels of oxygen, deleterious volatiles produced during treatment, or a sensitivity of the fruit to low oxygen.

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