Evaluation of Grape Quality Parameters by a Simple VIS/NIR System
Grape composition at harvest is one of the most important factors determining the future quality of wine. Measurement of grape characteristics that impact product quality is a requirement for vineyard improvement and for optimum production of wines (Carrara et al., 2008). Inspection of grapes upon arrival at the winery is a critical point in the wine production chain (Elbatawi and Ebaid, 2006). This check determines both the quality of the wine and the viticulturers' fees. This control is usually performed only on small samples that are not always representative of the whole; thus, the importance of this operation is easy to understand, as it determines the economic value of the entire stock. Would you like to read the complete article?
Rapid Detection of Heavy Metal Contents in Fruit by LIBS
In recent years heavy metals elements contained in fertilizer and environment contamination have been used in agriculture widely. Some deleterious heavy metals elements, such as plumbum (Pb), cadmium (Cd), hydrargyrum (Hg), chromium (Cr) and arsenic (As), are transmitted into fruits and other farm produces. Some of them are transited into high toxic compound going with food in body.
The detection and identification of heavy metals elements in foods, such as fruits, has been an important problem around the world. In this paper, the characteristic spectrum of elements Pb, Cd, Hg,Cr and As in orange pericarp and flesh were collected by laser-induced breakdown spectroscopy. Based on our results we propose an innovative strategy to detect heavy metal contents in fruits rapidly. Would you like to read the complete article?
Analysis of Peach Ripeness by an Electronic Nose and Near-Infrared Spectroscopy
Total soluble sugar content (SSC) and firmness are the indicators that better match the consumer's perception of maturity, but they currently require a destructive measurement. In this work, an Electronic Nose and a Near Infrared Spectrometer have been used as non-destructive techniques to assess the ripeness state of peach samples. To evaluate the performance of the two techniques the electronic nose responses and the NIR spectra have been correlated with SSC and firmness values, measured by a refractometer and a penetrometer respectively. The data have been analysed by multivariate regression methods (MLR, PCR, PLS, Surface Response Modeling) and they gave good predictions results both for SSC and for firmness. Would you like to read the complete article?
Sweet Cherry Fruit Analysis with Reflectance Measurements
The total sweet cherry production of the world ranges between 1.4 and 1.6 million tons. Regarding the growing area, Europe has a leading role as more than 50% of sweet cherry is produced here. Based on the most recent data, the average amount of sweet cherry produced in Hungary is around 10-12 thousand tons. Therefore fast and effective method is important for sweet cherry fruit quality analyses. The aim of the study was to examine the applicability of reflectance measurements for sweet cherry fruit quality analyses. Would you like to read the complete article?