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Microcalorimetry as a tool to measure shelf-life at postharvest of green asparagus.

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Title: Microcalorimetry as a tool to measure shelf-life at postharvest of green asparagus.
Authors: Gardea-Bejar, Alfonso A.1 (AUTHOR), Sánchez-Estrada, Alberto2 (AUTHOR) aestrada@ciad.mx, Orozco-Avitia, Jesús A.2 (AUTHOR), Tiznado-Hernández, Martín E.2 (AUTHOR), Troncoso-Rojas, Rosalba2 (AUTHOR), Mercado-Ruiz, Jorge N.2 (AUTHOR), Ojeda-Contreras, Angel J.2 (AUTHOR), Fortiz-Hernández, Judith2 (AUTHOR), Robles-Sardín, Alma E.3 (AUTHOR)
Source: New Zealand Journal of Crop & Horticultural Science. Dec2025, Vol. 53 Issue 4, p889-906. 18p.
Subjects: Asparagus, Microcalorimetry, Measuring instruments, Sugars, Turgor
Abstract: There are many methods to store and extend the postharvest life of asparagus spears, but their effectivity is measured by variables that do not reflect spears' senescence. The objective of the experiment was to utilised isothermal microcalorimetry as a tool to objectively measure the quality loss of asparagus spears during postharvest storage. Asparagus spears cv. Brock were stored at 2°C and 5°C and 90% humidity for 16 days. Metabolic heat and metabolic efficiency of asparagus spears were measured during 16 days. Also, water status, total soluble solids (TSS%), titratable acidity (TA%), pH, sugars, and space colour variables were recorded. We found a determination coefficient of 0.79 and 0.87 between metabolic heat and respiration rate in whole spears stored at 2°C and 5°C by a polynomic regression. It was recorded a regression between metabolic heat and fructose (0.5) and glucose (0.67) at 2°C and fructose (0.79) and glucose (0.76) at 5°C and sugar content. We detected slight changes in quality parameters (pH, Acidity, TSS), weight loss, and turgor pressure during storage. It was concluded that parameters obtained through isothermal microcalorimetry were sensitive and reliable indicators to detect changes in postharvest parameters commonly used to evaluate changes in asparagus spears quality. [ABSTRACT FROM AUTHOR]
Copyright of New Zealand Journal of Crop & Horticultural Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Microcalorimetry as a tool to measure shelf-life at postharvest of green asparagus.
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  Data: <searchLink fieldCode="AR" term="%22Gardea-Bejar%2C+Alfonso+A%2E%22">Gardea-Bejar, Alfonso A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sánchez-Estrada%2C+Alberto%22">Sánchez-Estrada, Alberto</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> aestrada@ciad.mx</i><br /><searchLink fieldCode="AR" term="%22Orozco-Avitia%2C+Jesús+A%2E%22">Orozco-Avitia, Jesús A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tiznado-Hernández%2C+Martín+E%2E%22">Tiznado-Hernández, Martín E.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Troncoso-Rojas%2C+Rosalba%22">Troncoso-Rojas, Rosalba</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mercado-Ruiz%2C+Jorge+N%2E%22">Mercado-Ruiz, Jorge N.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ojeda-Contreras%2C+Angel+J%2E%22">Ojeda-Contreras, Angel J.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fortiz-Hernández%2C+Judith%22">Fortiz-Hernández, Judith</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Robles-Sardín%2C+Alma+E%2E%22">Robles-Sardín, Alma E.</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22New+Zealand+Journal+of+Crop+%26+Horticultural+Science%22">New Zealand Journal of Crop & Horticultural Science</searchLink>. Dec2025, Vol. 53 Issue 4, p889-906. 18p.
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  Data: <searchLink fieldCode="DE" term="%22Asparagus%22">Asparagus</searchLink><br /><searchLink fieldCode="DE" term="%22Microcalorimetry%22">Microcalorimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Measuring+instruments%22">Measuring instruments</searchLink><br /><searchLink fieldCode="DE" term="%22Sugars%22">Sugars</searchLink><br /><searchLink fieldCode="DE" term="%22Turgor%22">Turgor</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: There are many methods to store and extend the postharvest life of asparagus spears, but their effectivity is measured by variables that do not reflect spears' senescence. The objective of the experiment was to utilised isothermal microcalorimetry as a tool to objectively measure the quality loss of asparagus spears during postharvest storage. Asparagus spears cv. Brock were stored at 2°C and 5°C and 90% humidity for 16 days. Metabolic heat and metabolic efficiency of asparagus spears were measured during 16 days. Also, water status, total soluble solids (TSS%), titratable acidity (TA%), pH, sugars, and space colour variables were recorded. We found a determination coefficient of 0.79 and 0.87 between metabolic heat and respiration rate in whole spears stored at 2°C and 5°C by a polynomic regression. It was recorded a regression between metabolic heat and fructose (0.5) and glucose (0.67) at 2°C and fructose (0.79) and glucose (0.76) at 5°C and sugar content. We detected slight changes in quality parameters (pH, Acidity, TSS), weight loss, and turgor pressure during storage. It was concluded that parameters obtained through isothermal microcalorimetry were sensitive and reliable indicators to detect changes in postharvest parameters commonly used to evaluate changes in asparagus spears quality. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of New Zealand Journal of Crop & Horticultural Science is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/01140671.2023.2182331
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      – Code: eng
        Text: English
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        PageCount: 18
        StartPage: 889
    Subjects:
      – SubjectFull: Asparagus
        Type: general
      – SubjectFull: Microcalorimetry
        Type: general
      – SubjectFull: Measuring instruments
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      – SubjectFull: Sugars
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      – SubjectFull: Turgor
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      – TitleFull: Microcalorimetry as a tool to measure shelf-life at postharvest of green asparagus.
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              M: 12
              Text: Dec2025
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