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Non-destructive evaluation of potato quality: linking pre- and post-harvest factors

The review indicates that pre-harvest factors affect potato quality and storage behavior, as well as post-harvest conditions. In addition, it highlights non-destructive techniques such as imaging and Near-Infrared Spectroscopy (NIR) for rapidly assessing quality

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09 April, 2026

Potatoes (Solanum tuberosum) are starchy root vegetables from the Solanaceae family that are widely consumed around the worldThey originated in the Andean regions of southern Peru and northern Bolivia and are currently cultivated globallytypically as a summer crop in temperate regions and as a winter crop in subtropical lowland areasPotatoes are now considered the most important non-cereal food commodity and represent an affordable source of carbohydrates, making them essential for food security. 

Nutritional importance and consumption

They have long served as a staple foodparticularly in developing countriesFrom a nutritional perspectivepotatoes are a source of carbohydratesmineralsvitamin C, dietary fibre, and carotenoidsThereforethey contribute to a balanced diet and help meet nutritional needsespecially in regions affected by hungerpoverty, and nutrient deficienciesConsumption varies across regions: in developed countriesadults consume up to 150 g per daywhereas in African and Latin American regionsintake can range from 300 to 800 g dailyreflecting their dietary importance. 

Pre-harvest factors

Pre-harvest factors such as cultivar selectionsoil conditionsirrigationclimatetemperature variations, and pest control have a significant impact on tuber qualityEnvironmental stressesincluding nutrient imbalances and high temperatures, can affect carbohydrate metabolism and storage performance. In additionbiotic stresses caused by bacteria, fungi, and viruses can negatively influence physiological quality and shelf life. 

Post-harvest management

Post- harvest management aims to maintain potato quality during storage by controlling conditions such as temperature, relative humidity, gas composition, light exposure, and the use of sprout inhibitorsInadequate storage conditions may result in cold-induced sweeteningmicrobial spoilageinternal defects, and sproutingwhich reduce both quality and market valueFor this reasonstrict quality assessment is required to meet commercial standards, and all stages of the production chain must be properly coordinated to avoid damage and ensure optimal management. 

Quality assessment methods

Traditional methods for assessing potato quality are oftenmanual, time-consuming, and subject to variability and potential errors. More advanced analytical techniquessuch as high-performance liquid chromatographytexture analyzersprotein analyzerscolorimeters, and refractometersprovide accurate results but are generally destructive. In contrastrecent developments have introduced non-destructive approaches based on imaging and spectroscopywhich enable rapid evaluation of both external and internal quality. 

Limitations and need for an integrated approach

Although numerous studies have examined pre-harvest agronomic factorscultivation practices, and post-harvest quality separatelythere is still a lack of an integrated approach that links pre-harvest conditions with post-harvest physiological and compositional changes, as well as the role of non-destructive methodsPre-harvest conditions determine the initial physiological and biochemical state of potatoeswhich in turn influences their behaviour during storageSince post-harvest changes are dynamiccontinuous monitoring is necessary, and non-destructive technologies can support this process across different stages. 

Objective of the Study

The objective of this review is to compile current knowledge on potato quality by linking pre- and post-harvest stageswith a focus on abioticbiotic, and technological factors that influence its development and preservationIt also considers non-destructive techniquesparticularly imaging and spectroscopy, and their potential for rapid and comprehensive quality evaluationBy integrating pre- and post-harvest perspectives and incorporating non-destructive approachesthis review aims to offer a comprehensive framework that can support decision-making in research, academia, production, and industryultimately contributing to improved potato quality. 

 

The main figure used in this work corresponds to Figure 3 of the referenced article: 

Potato samples: (ahealthy skin, (bgreen skin, (cblack skin, (dscab-diseased skin, (ebroken skin, (fmechanically damaged skin (open access) 

Source  

A Comprehensive Review on Pre- and Post-Harvest Perspectives of Potato Quality and Non-Destructive Assessment ApproachesApplied Sciences. MDPI. https://doi.org/10.3390/app16010190 

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