The rate of respiration of potato tubers during storage 1. Review of literature

Schippers, Peter

doi:10.1007/bf02360280

Cited by 34 publications

(5 citation statements)

References 27 publications

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“…Indeed, many studies found a decrease in chlorophyll fluorescence in stress conditions: Toivonen (1992) found a correlation in broccoli (Brassica oleracea L. Botrytis group) between chlorophyll fluorescence decline in storage and the changes in respiration rate that are early indicators of the beginning of senescence. Moreover, it is known that the potato tuber respiration rate becomes rapid immediately after harvest, falls at 3-6 weeks and then rises during sprout growth (Schippers 1977); this trend is in fair agreement with the variations in fluorometric parameters observed in potato tuber storage (Fig. 2).…”

Section: Discussionsupporting

confidence: 86%

Nondestructive Analysis to Monitor Potato Quality during Cold Storage

Bianchi

Scalzo

Testoni

et al. 2014

Journal of Food Quality

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Samples of potatoes were harvested in 2007 in Friuli Venezia Giulia (Italy) and were stored at 6.5C for 6 months to assess quality characteristics, mainly related to the sprouting trend of tubers. The quality changes during cold storage were monitored using conventional measures (i.e., weight, visual appearance, morphological control, number and length of buds, °Brix) and nondestructive methods (fluorometry and colorimetry). Among 17 cultivars, seven were stored at a lower temperature (0C) for 4 months and then 10C for 15 days to verify the reversible interconversion between starch and sugar induced by the storage temperature. The most important results were given by fluorometric analysis, which provided useful information for predicting the sprouting trend of tubers, as well as other objective analytical tests: the quantum yield had in most cultivars the minimum value in predicting sprouting time. After the low‐temperature storage, the quantum yield was irreversibly reduced. Practical Applications Nondestructive techniques based on chlorophyll fluorescence measurements are used to monitor quality changes during post harvest storage of fruit and vegetables. Fluorometric values give indications not only about the chlorophyll amount, but also on the physiological state of photosynthetic apparatus. Even if potato tubers in good storage conditions don't produce chlorophyll, they possess a photosynthetic apparatus whose physiological state can be measured by fluorometry. Potatoes stored at low temperatures are subject to the sweetening process, but starch is synthesized again when potatoes are transferred to normal temperatures. The photosynthetic apparatus is damaged by low temperatures, as indicated by the decrease of fluorometric values, and this process is not reversible. The fluorometric indexes can be measured in order to check if potatoes were properly stored and evaluate differences of behavior in storage. The nondestructive method will enhance monitoring of potatoes quality during storage, thus minimizing both time and food wastages.

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Section: Discussionsupporting

confidence: 86%

Nondestructive Analysis to Monitor Potato Quality during Cold Storage

Bianchi

Scalzo

Testoni

et al. 2014

Journal of Food Quality

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“…The experiment was carried out to examine the relative changes in internal atmosphere involved in the effects of the MA treatments on tuber greening. Increased respiration caused by wounding potato tubers can persist for a number of days (Schippers, 1977). Whilst wound respiration would largely have subsided in the 7-day interval between cutting and sampling in this experiment, the internal atmosphere data values presented should be regarded as relative rather than absolute.…”

Section: Resultsmentioning

confidence: 92%

Coating and modified atmosphere effects on potato tuber greening

Banks

1985

J. Agric. Sci.

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Coating and modified atmosphere treatments reduced light-induced greening of King Edward potatoes. Although ' Pro-long' coating and 5 % O 2 treatments gave more complete inhibition of greening in some tubers, the variability of response was greater and the mean response less than for treatment with 15 % CO 2 , 21 % O 2 . The pattern of greening in the different treatments suggested the presence of O 2 gradients within the tuber flesh. Coating caused small internal atmosphere changes, with CO 2 content being negatively correlated with chlorophyll content. Larger changes achieved by modifying the external atmosphere of such tubers increased greening suppression. However, the magnitude of response to coating and to the low O 2 treatment varied with maturity and growing conditions. The success of coating for inhibition of greening in potatoes will depend upon the physiological variability of the tubers to which it is applied.

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“…Maintaining raw product quality during long-term storage of potatoes destined to frozen processing (French fries) is highly dependent on cultivar and storage temperature. Storage at less than 9 o C effectively extends storage life by reducing tuber respiration, fresh weight loss, disease pressure and sprouting (Burton 1966;Schippers 1977;Burton 1978;Wiltshire and Cobb 1996). Retention of process quality at lower temperatures, however, is compromised by the induction of low-temperature sweetening (LTS) in susceptible cultivars.…”

Section: Introductionmentioning

confidence: 99%

Low oxygen storage modulates invertase activity to attenuate cold-induced sweetening and loss of process quality in potato (Solanum tuberosum L.)

Herman

Knowles

2016

Postharvest Biology and Technology

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Russet Burbank and Innovator are mid-to late-season frozen-processing cultivars with inherently different dormancy periods and susceptibilities to low temperature-induced sweetening (LTS). In contrast to Russet Burbank, which is highly prone to accumulation of reducing sugars (Glc + Fru) when stored below 8-9 o C, Innovator tubers exhibit moderate resistance to LTS and retain process quality longer at lower temperatures (4-6 o C). However, Innovator's LTS resistance is not robust and often varies across production regions. Here we show that low O 2 storage modulates LTS to reveal metabolic differences intrinsic to these cultivars. Changes in tuber respiration, process quality, reducing sugars, sucrose, starch phosphorylase and invertase activities were compared at 4 and 8 o C in 2.5 and 21 kPa O 2 over a 212-d storage period. Tuber respiration declined rapidly as O 2 level decreased from 21 to 2.5 kPa during acclimation at 8 o C. Respiration rates then fell further as the temperature was lowered from 8 to 4 o C, but this response was greatly muted for tubers at 2.5 versus 21 kPa O 2 . Tubers at 21 kPa O 2 completed their cold-induced respiratory acclimation response (RAR) within 7 d compared with 13 d at 2.5 kPa O 2 , and the RAR was much greater for tubers at 2.5 kPa O 2 . While reducing sugars increased most rapidly in tubers over the first 30 d at 4 o C, Innovator tubers had lower invertase activity and sweetened less than Russet Burbank tubers, characterizing its LTS-resistant phenotype. Low O 2 greatly attenuated these initial LTS responses for both cultivars; however, the effect was only temporary in Innovator. LTS resumed in Innovator tubers from 93 to 212 d with reducing sugar levels increasing to equal that of Russet Burbank tubers stored at 4 o C and 21 kPa O 2 . Activities of -1,4 glucan phosphorylase (SP) were higher in Russet Burbank than Innovator and increased progressively over the storage period regardless of temperature and oxygen concentration. Innovator tubers stored at 2.5 kPa O 2 had higher SP activities from 30 to 153 d at 4 and 8 o C compared with tubers stored at 21 kPa O 2 , which correlated well with increased sucrose buildup and earlier sprouting. The low O 2 -mediated inhibition of LTS was largely a consequence of reduced invertase activities.

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The rate of respiration of potato tubers during storage 1. Review of literature

Cited by 34 publications

References 27 publications

Nondestructive Analysis to Monitor Potato Quality during Cold Storage

Nondestructive Analysis to Monitor Potato Quality during Cold Storage

Coating and modified atmosphere effects on potato tuber greening

Low oxygen storage modulates invertase activity to attenuate cold-induced sweetening and loss of process quality in potato (Solanum tuberosum L.)

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