Monitoring Shelf Life of Carrots with a Peptides Based Electronic Nose
Monitoring and control of vegetable ripeness is a necessary and challenging issue in the food industry; in fact, the state of ripeness during harvest, storage, and market distribution defines the quality of the final product which is approved by customer preferences. Conventional methods used to determine the shelf life of vegetable are based on chemical, microbiological, physical and sensory indices. The majority of the classical methods are time-consuming and require skilled personnel. The aim of this work was to demonstrate that a methodology based on ZnO-peptide based QCMs array of gas sensors are useful to predict the shelf life of carrots. Samples of blanched carrots were stored at different temperatures (4, 25 °C and −18 ℃) and analyzed after one month in gas-chromatography and with the sensor array. The results, analysed using principal component analysis (PCA) indicated that the sensors are able to clearly discriminate the different temperatures of storage.
KeywordsGas sensors Shelf-Life Carrots Peptide ZnO
- 3.Sanaeifar, A., Mohtasebi, S.S., Ghasemi-Varnamkhasti, M., Siadat, M.: Application of an electronic nose system coupled with artificial neural network for classification of banana samples during shelf-life process. In: Control, Decision and Information Technologies (CoDIT), pp. 753–757 (2014)Google Scholar
- 9.Zak, A.K., Razali, R., Majid, W.A., Darroudi, M.: Synthesis and characterization of a narrow size distribution of zinc oxide nanoparticles. Int. J. Nanomed. 6, 1399 (2011)Google Scholar
- 11.Mascini, M., Gaggiotti, S., Della Pelle, F., Di Natale, C., Qakala, S., Iwuhoa, E., Compagnone, D., et al.: Peptide modified ZnO nanoparticles as gas sensors array for volatile organic compounds (VOCs). Front. Chem. 6, 105 (2018)Google Scholar