Effect of different concentrations of ozone on physiological changes associated to gas exchange, fruit ripening, fruit surface quality and defence-related enzymes levels in papaya fruit during ambient storage

2014 ◽  
Vol 179 ◽  
pp. 163-169 ◽  
Author(s):  
Mei Kying Ong ◽  
Asgar Ali ◽  
Peter G. Alderson ◽  
Charles F. Forney
Keyword(s):  
Gas Exchange ◽  
Surface Quality ◽  
Fruit Ripening ◽  
Physiological Changes ◽  
Ambient Storage ◽  
Fruit Surface

Words used by the breathless patient in COPD and enhancing therapeutic care

2021 ◽  
Vol 13 (3) ◽  
pp. 1-7
Author(s):  
Susan Harrison
Keyword(s):  
Gas Exchange ◽  
Respiratory System ◽  
Service Users ◽  
Physiological Changes ◽  
Shortness Of Breath ◽  
Holistic View ◽  
Comprehensive List ◽  
Distressing Symptom ◽  
Assessment And Treatment ◽  
Therapeutic Care

Shortness of breath, dyspnoea and breathlessness are collective terms to describe the awareness of inadequate gas exchange within the respiratory system. Varying mechanisms, behavioural and physiological changes are caused by this ventilation–perfusion mismatch. This complex sensation encompasses many diverse concepts. The spectrum of language and words used as a consequence of this sensation vary from quality and intensity to emotions and feelings. Matching the phrases to the cause supports understanding. Studies reviewed produced clusters of verbal descriptors which reflect the multidimensional input as a consequence of being out of breath. Using these clusters has produced a comprehensive list of twelve words known as ‘The Dyspnoea 12’ which, when used, quantifies the severity of this debilitating and extremely distressing symptom. Could these verbal descriptors be used to aid the assessment and treatment of their cause in service users and provide a more holistic view to a widespread problem?

scholarly journals Evaluation of postharvest quality of edible coated mandarin at ambient storage

2018 ◽  
Vol 8 (1) ◽  
pp. 18-25 ◽  
Author(s):  
TAA Nasrin ◽  
MN Islam ◽  
MA Rahman ◽  
MS Arfin ◽  
MA Ullah
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Respiration Rate ◽  
Liquid Paraffin ◽  
Coconut Oil ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Ambient Storage ◽  
Fruit Surface

An experiment was conducted to assess the influence of edible coatings on postharvest quality of mandarin during 20 days of ambient storage. Sorted fruits were washed; fruit surface water was removed and then coated with 100% liquid paraffin wax, 0.5% chitosan, 1.0% chitosan, 1.5% chitosan, and 100% coconut oil. After coating, fruit surface was air dried and kept at ambient condition (25±3 °C, 60–70% RH) and analyzed periodically for weight loss, respiration rate, firmness, decay incidence, TSS, pH, ascorbic acid content, and sensory properties. The results revealed that coconut oil had immense effect on the reduction of the weight loss and respiration rate and preserved firmness, total soluble solids, ascorbic acid, total sugar and reducing sugar and no incidence of moulds & their growth was found up to 16 days of storage.Int. J. Agril. Res. Innov. & Tech. 8 (1): 18-25, June, 2018

Physiological changes in fruit ripening caused by overexpression of tomato SlAN2, an R2R3-MYB factor

2015 ◽  
Vol 89 ◽  
pp. 24-30 ◽  
Author(s):  
Xia Meng ◽  
Dongyue Yang ◽  
Xiaodong Li ◽  
Shuya Zhao ◽  
Na Sui ◽  
...  
Keyword(s):  
Fruit Ripening ◽  
Physiological Changes ◽  
R2r3 Myb ◽  
Myb Factor

scholarly journals Gas exchange in fruits related to skin condition and fruit ripening studied with diode laser spectroscopy

2016 ◽  
Vol 21 (12) ◽  
pp. 127007 ◽  
Author(s):  
Jing Huang ◽  
Hao Zhang ◽  
Huiying Lin ◽  
Tianqi Li ◽  
Liang Mei ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Diode Laser ◽  
Laser Spectroscopy ◽  
Fruit Ripening ◽  
Skin Condition ◽  
Diode Laser Spectroscopy

scholarly journals LEAD STUDIES

1924 ◽  
Vol 40 (2) ◽  
pp. 173-187 ◽  
Author(s):  
Joseph C. Aub ◽  
Paul Reznikoff ◽  
Dorothea E. Smith
Keyword(s):  
Gas Exchange ◽  
Red Blood Cells ◽  
Osmotic Pressure ◽  
Blood Cells ◽  
Red Cells ◽  
Agglutination Reaction ◽  
Physiological Changes ◽  
Partial Loss ◽  
Normal Cells ◽  
Surface Changes

The physiological changes following the reaction of lead upon red blood cells are numerous and show the marked effects of a change in the cell surface. In experiments here reported 0.01 to 0.05 mg. of lead acting upon 5 billion red cells caused such marked variations from normal as: 1. Partial loss of the normal stickiness of red corpuscles, which is demonstrated by their falling from a clean glass surface. 2. Loss of the agglutination reaction which normally follows mixture with serum of a different isoagglutinating group. 3. Decrease in volume even in isotonic solutions. 4. Loss of normal elasticity and, therefore, reduced changes in volume upon exposure to marked variations in osmotic tension. 5. Increase in resistance to large changes in external osmotic pressure because of this inelasticity, and therefore decreased hemolysis in hypotonic salt solution (Part 1). 6. Increase in the speed of disintegration in spite of this increased resistance to external osmotic pressure. "Leaded" cells break up more readily upon standing than do normal cells, and are easily fractured by rotation or shaking (Part 1). All these phenomena seem to be associated largely with surface changes in the corpuscles. Evidence is cited that there is no chemical reaction between lead and hemoglobin. The gas exchange is identical in normal and "leaded" cells. The function of the interior of the red cells, therefore, appears to be unaffected by lead. The effects of lead upon red blood cells are thus manifested by shrinkage, inability to expand, increased brittleness, and loss of the normal consistency which makes their surface sticky. After exposure to lead, red blood corpuscles are more like hard inelastic brittle rubber balls, than like the soft, elastic, resilient cells characteristic of normal blood.

scholarly journals Physiological changes of pomegranate seedlings under salt stress and nitrogen fertilization

2021 ◽  
Vol 25 (7) ◽  
pp. 453-459
Author(s):  
Lauriane A. dos A. Soares ◽  
Sabrina G. de Oliveira ◽  
Geovani S. de Lima ◽  
Pedro D. Fernandes ◽  
Railene H. C. R. Araújo ◽  
...  
Keyword(s):  
Salt Stress ◽  
Gas Exchange ◽  
Photosynthetic Pigments ◽  
Irrigation Water ◽  
Nitrogen Fertilization ◽  
Electrolyte Leakage ◽  
Co2 Assimilation ◽  
Water Salinity ◽  
Physiological Changes ◽  
Irrigation Water Salinity

HIGHLIGHTS Irrigation water salinity alters gas exchange and biosynthesis of photosynthetic pigments in po-megranate. The reduction in CO2 assimilation in pomegranate plants under salt stress is related to non-stomatal factors. Increasing nitrogen doses increase electrolyte leakage in pomegranate seedlings.

scholarly journals Physiological changes modulated by rootstocks in atemoya (Annona x atemoya Mabb.): gas exchange, growth and ion concentration

2017 ◽  
Vol 41 (1) ◽  
pp. 219-225 ◽  
Author(s):  
D. Baron ◽  
A. C. E. Amaro ◽  
A. C. Macedo ◽  
C. S. F. Boaro ◽  
G. Ferreira
Keyword(s):  
Gas Exchange ◽  
Ion Concentration ◽  
Physiological Changes

scholarly journals Fractional Surface Coating Modifies Gas Diffusion and Ripening in Bananas

1998 ◽  
Vol 123 (1) ◽  
pp. 115-118 ◽  
Author(s):  
Rufino Perez ◽  
Randolph M. Beaudry
Keyword(s):  
Gas Exchange ◽  
Surface Coating ◽  
Gas Diffusion ◽  
Musa Acuminata ◽  
Diffusion Pathway ◽  
Diffusive Resistance ◽  
End To End ◽  
Fractional Surface ◽  
Exchange Properties ◽  
Fruit Surface

We hypothesized that the blocking of O2 influx and CO2 efflux in banana (Musa acuminata) by sealing nearly 100% of the pores over a fraction of the surface would generate a modified internal atmosphere in a manner similar to fruit coatings that cover 100% of the banana surface but only block a fraction of the pores. This hypothesis was based on the observation made by previous workers that the flesh of mature green bananas has insignificant resistance to O2 diffusion relative to the resistance imposed by the skin of the fruit. We modified the O2 diffusion pathway in bananas by covering, beginning at one end, ¼, ½, ¾, and ⅞ of the fruit surface with paraffin, which sealed essentially 100% of the surface where it was applied. Large end-to-end O2 and CO2 gradients developed within coated fruit, relative to the uncoated control, suggesting that the diffusive resistance in the pulp was not insignificant. Since the large gradients of O2 generated caused uneven ripening, using fractional coatings may help analyze gas exchange properties, but it is not suitable for commercially controlling ripening of bananas.

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