A novel digital image method for determination of reducing sugars in aged and non-aged cachaças employing a smartphone

A novel approach for lactose determination in cow's milk exploiting smartphone-based digital-image photometry

“…4, 3, and 2.3-fold lower amounts of Cu( ii )), 24,26,37 and generates the lowest waste volume per determination ( ca. 4, 16 and 35-fold lower than previously reported), 10,16,27 in accordance with green chemistry principles. The linear range and the limit of detection (LOD) of the proposed method are comparable 17 or even better 10,24,26,27 than those previously reported.…”

“…4, 16 and 35-fold lower than previously reported), 10,16,27 in accordance with green chemistry principles. The linear range and the limit of detection (LOD) of the proposed method are comparable 17 or even better 10,24,26,27 than those previously reported. These characteristics, jointly with the practicality and cost-effectiveness provided by smartphone-based digital image detection, make the proposal a viable alternative for determination of lactose in milk.…”

“…22,23 Novel procedures have also been developed for determination of reducing sugars in so drinks, 24 yeast, 25 coconut water, fruit juices, and cachaça. 26,27 Analytical measurements are usually based on smartphone cameras, with images taken under controlled conditions (e.g., illumination, capture distance, and region of interest, ROI). 28 The acquired images are converted to a suitable color system (e.g.…”

A novel in situ method for linear alkylbenzene sulfonate quantification in environmental samples using a digital image-based method

“…In order to apply the DIB method, one needs to use suitable analytical platforms to accommodate the solutions containing the analytes of interest. Some of the materials that are most commonly used as platforms for analysis include paper, 27 ceramics, 28 common cuvettes, polystyrene microplates, and spot test platforms constructed using a 3D printer with biodegradable polymers such as polylactic acid (PLA), to name a few. 29 In order to obtain reliable results and facilitate the reproduction of analytical procedures, some parameters must be adjusted and controlled for the acquisition of digital images through smartphone cameras.…”

Using a biphasic system and digital imaging analysis with chemometric tools for simultaneous determination of Cu2+ and furfural in cachaça

“…8 Recently, numerous studies have pointed out the inconsistencies relative to the composition of cachaça samples, where they showed that the contents of the samples are not in line with the standard contents established by the Brazilian legislation 9 for the following compounds: furfural, 10,11 Cu 2+ (ref. 2, 12–14), methanol, 11,15 reducing sugars, 16 ethyl carbamate, 11,14 acrolein, 17,18 and so forth. Furfural and hydroxymethylfurfural (HMF) are aromatic aldehydes which are among the undesirable components found in cachaça samples.…”