Douglas Fernandes Barbin

State University of Campinas (UNICAMP) | UNICAMP · Departamento de Engenharia de Alimentos (DEA)

Dragon fruit (Selenicereus undatus) has gained popularity in the Brazilian market, thus demanding enhanced methods for quality assessment and control. Due to its unique morphological features, evaluating its quality presents a significant challenge to the industry. Image analysis, combined with Deep Learning (DL) techniques, offers a promising solu...

In scenarios where yeast and bacterial cells coexist, it is of interest to simultaneously quantify the concentrations of both cell types, since traditional methods used to determine these concentrations individually take more time and resources. Here, we compared different methods for quantifying the fuel ethanol Saccharomyces cerevisiae PE-2 yeast...

In scenarios where yeast and bacterial cells coexist, e.g. the food and bioethanol industries, it would be of interest to simultaneously quantify the concentrations of both cell types, since traditional methods used to determine these concentrations individually take more time and resources. Here, we compared different methods for quantifying the f...

This paper assesses the biological activity of tomatoes at different ripeness stages using biospeckle analysis and correlate the findings with physico-chemical measurements, including color (colorimetry), pH, and sugar content (°Brix). Biospeckle patterns were captured using two laser sources, and metrics were established to evaluate biological act...

Cape gooseberries possess high nutritional value, characterized by elevated levels of vitamin C. This study proposed the application of near infrared hyperspectral imaging (NIR-HSI) coupled with chemometrics (Partial Least Square Regression (PLSR) and Support Vector Machine Regression (SVMR)) to predict vitamin C content (mg/mL), firmness (N), solu...

Milk is one of the traditional foods in the human diet. However, subclinical mastitis infection in cows could compromise the nutritional composition of milk as well as the consumer safety. In this study, we investigated the possibility of implementing near infrared spectroscopy (NIRS), using a portable spectrometer, as a screening method to detect...

1. The effect of environmental gradients on the remarkable diversity of mountain- associated plants and on the species' abilities to cope with climate change tran-scends species-specific strategies. For instance, our understanding of the impact of thermal gradients on ecological divergences in populations of widely distrib-uted species is limited,...

Alpaca meat has high protein content; good tenderness and low intramuscular fat content, being more expensive than meat from other animals (e.g., beef). Hence, alpaca meat may face adulteration, which demands chemical analytical methods to be identified. In this study, chemical-free methods, e.g., portable NIR spectrometer and NIR-HSI were employed...

Correction for ‘Low-cost electronic-nose (LC-e-nose) systems for the evaluation of plantation and fruit crops: recent advances and future trends’ by Marcus Vinicius da Silva Ferreira et al. , Anal. Methods , 2023, https://doi.org/10.1039/D3AY01192E.

Traditional techniques for quality assessment of fresh agricultural products are onerous and costly. Imaging systems based on the visible wavelength range have been widely used for automated processing because they are relatively inexpensive and fast and designed to represent the human eye to detect external features such as size, shape, colour, or...

The following investigations describe the potential of handheld NIR spectroscopy and Raman imaging measurements for the identification and authentication of food products. On the one hand, during the last decade, handheld NIR spectroscopy has made the greatest progress among vibrational spectroscopic methods in terms of miniaturization and price/pe...

An electronic nose (e-nose) is a device designed to recognize and classify odors by mimicking and enhancing the olfactive cells of humans. The equipment is built around a series of...

This study investigated the oxidative susceptibility of whey protein isolate (WPI) dispersions treated by microwave or thermal convection before freeze-drying. WPI (20 mg protein/mL) in distilled water (DW) was heated at 63 ± 2 °C for 30 min by microwave (WPI-MW) or convection heating (WPI–CH) and freeze-dried. Untreated WPI (WPI–C), WPI solubilize...

Artisanal cheeses are highly valued around the world for their distinct sensory characteristics, thus being prone to adulteration by substituting authentic material for cheaper products, such as vegetable oil. In this work, we developed a method based on a portable NIR spectrometer as a non-destructive and low-cost alternative to identify adulterat...

The fermented and dried cocoa beans are peeled, either before or after the roasting process, as peeled nibs are used for chocolate production, and shell content in cocoa powders may result from economically motivated adulteration (EMA), cross-contamination or misfits in equipment in the peeling process. The performance of this process is carefully...

Cinnamon is a valuable aromatic spice widely used in pharmaceutical and food industry. Commonly, two-cinnamon species are available in the market, Cinnamomum verum (true cinnamon), cropped only in Sri Lanka, and Cinnamomum cassia (false cinnamon), cropped in different geographical origins. Thus, this work aimed to develop classification models base...

Cumin (Cuminum cyminum L.) powder is a flavoured and valuable spice, usually adulterated with allergenic nutshells that may affect consumer health. Identification of these adulterants is normally performed with expensive analytical equipment using time-consuming methods. In this work, we compared a portable Near Infrared spectrometer (NIRS) and Fou...

Carambola is a tropical fruit with rising value in developed countries due to its nutritional value and exotic aspect. It is important to assess carambola quality in different maturity stages to estimate a “fair price” and to assign fruit for specific applications and markets. This work reported the use of a portable NIR spectrometer in the range o...

The use of nondestructive techniques that can guarantee in situ monitoring of the quality of food products during drying processes can promote improvements in industrial processes. In this context, digital imaging and near infrared spectroscopy can play an important role. Red beet moisture content, betalain content, shrinkage, and color were measur...

Butteroil is valuable product appreciated for its sensory characteristics, economic importance, and social/cultural significance, as it has similarities in several regions of the world. Due to its high added value, this product is susceptible to adulteration by replacing authentic butteroil with other cheaper fats, or even by expired butteroil. Det...

The production of alternative proteins to meet the demand of a growing population has accelerated the growth of the market for edible insects. Black fly soldier (BFS) larvae (Hermetia illucens L.) have been widely studied globally due to their high content of fat, protein, and minerals, being mainly used for animal feed. Chemical analysis for deter...

Cocoa hybridisation generates new varieties which are resistant to several plant diseases, but has individual chemical characteristics that affect chocolate production. Image analysis is a useful method for visual discrimination of cocoa beans, while deep learning (DL) has emerged as the de facto technique for image processing. However, these algor...

Wheat flour is a food ingredient used in different processed food products, including pasta, cake, bread, among others. Therefore, the authentication and assurance of good quality are of great importance. The traditional techniques used for quality parameters determinations are laborious, destructive, and demand chemical analysis. Hence, it is nece...

Large amount of information in hyperspectral images (HSI) generally makes their analysis (e.g., principal component analysis, PCA) time consuming and often requires a lot of random access memory (RAM) and high computing power. This is particularly problematic for analysis of large images, containing millions of pixels, which can be created by augme...

Chia seeds are nutritious food because they have a high content of protein, polyunsaturated fatty acids (omega-3 and omega-6) and phenolic compounds. During storage, fatty acids are degraded, by oxidative and hydrolytic reactions, forming free fatty acids (FFA). In this work, we used Near Infrared Hyperspectral Imaging (NIR- HSI) and chemometrics t...

The dairy products sector is an important part of the food industry, and their consumption is expected to grow in the next 10 years. Therefore, the authentication of these products in a faster and precise way is required for the sake of public health. This review proposes the use of near‐infrared techniques for the detection of food fraud in dairy...

Acknowledgements to Reviewers The Editors of the Journal of Food Engineering would like to thank the following subject matter experts for their support to scientific publishing through peer reviews of multiple manuscripts that they have performed for the journal in 2021. Without the generous support of these professionals. Journal of Food Engineer...

Fermented cocoa bean samples collected from three different regions of Brazil (Bahia, Espírito Santo and Pará). Samples (n = 1800) of cocoa beans were cut lengthwise in two parts to expose the cotyledon. Each individual sample was analysed and classified regarding its colour and texture of the exposed surface, as in the cut-test. Cocoa beans were c...

Coriander oil is a vegetable oil extracted from coriander seed that has about 70% of petroselinic acid, apart from anti-inflammatory and anti-aging properties, thus gaining the status of new food ingredient. Due to its properties and added value, it can become the target of adulteration as occurs with other edible vegetable oils of high market valu...

Cumin is a valuable spice for medical and food applications. Nevertheless, reports of the presence of undeclared adulterants in cumin require the development of analytical methods for its authentication. The goal of this study was to develop a new analytical method based on NIR-HSI (900 – 1710 nm) and chemometrics to detect low-cost adulterants pea...

Brassica is a genus of oilseed plants mainly used to produce edible oils, modified lipids, industrial oils, and biofuels. Oil and fatty acid content are the main chemical indicators for Brassicas seed quality (e.g. low content of erucic acid indicate seeds appropriate for food industry, while high contents indicate are suitable in the cosmetic, pha...

Meltability is the property of a cheese to flow and spread, as well as the loss of the integrity of the cheese structure by heating, and is of great importance for cheeses used as ingredients in other products. Analytical methods for determination of cheese meltability are laborious and time-consuming, requiring heating of cheese samples followed b...

Pumpkin is a yellow or orange-colored vegetable with a mild flavor that stands out as a fiber and nutrient source. However, the products with pumpkins are still little explored in Brazil, due to high perishability in natura and to the lack of eating habits of regional baked goods. This study aimed to produce and characterize a pumpkin flour to be u...

This is an image dataset (JPEG)of papaya fruit. The objective is to predict the ripening of the papaya fruit using digital imaging. A total of 131 samples from 57 fruits are used for the experiments. These fruits are classified into three stages of maturity (EM1, EM2 and EM3). Some images present more than one acquisition, having more than one imag...

Quail eggs are one of the main natural sources of essential nutrients, presenting high amounts of protein, antioxidants, calcium, iron and phosphorus. However, its quality assessment demands laborious methods and chemicals, and there is currently no standard method do quantify its freshness. This work aimed to investigate the performance of a porta...

Despite having an affordable price, several reports of egg mislabeling are published annually, which involves selling stale eggs as fresh. NIR spectroscopy has been successfully used for the prediction of eggs’ freshness. In recent years, a new generation of low-cost, portable NIR sensors has been investigated for on-line and in situ food analysis....

Aqueous two-phase system (ATPS) is a technique used for the separation of biopolymers in two aqueous phases. Some combinations of biopolymers can form a water-in-water (W/W) emulsion due to steric exclusion and thermodynamic incompatibility between these biopolymers under some specific conditions. In this work, the formation of W/W emulsions compos...

The evaluation of the melon drying process under different pretreatments using hyperspectral images in near infrared (HSI-NIR) is presented as a quick and non-destructive means. Hyperspectral images of melon slices (3.0 cm x 3.0 cm x 0.3 cm) were obtained for different drying times. Principal Component Analysis applied to the images of cross sectio...

Blockchain food traceability is currently among the trending topics of the global agrifood segment. The possibility of rapidly assessing the full information of a food product, from its origin to the final consumer destination, covering every single point of its journey through the food chain, gives blockchain a promising disruptive tool that offer...

Fermentation of cocoa beans is a critical step for chocolate manufacturing, since fermentation influences the development of flavour, affecting components such as free amino acids, peptides and sugars. The degree of fermentation is determined by visual inspection of changes in the internal colour and texture of beans, through the cut-test. Although...

A new methodology based on Near Infrared-hyperspectral imaging and Principal Components Analysis (PCA) was developed and accurately validated to model the degradations kinetics and to estimate the multivariate accelerated shelf life (MASLT) of chia seeds (Salvia hispanica). Chia seeds were stored 180 days at 25, 35 and 45 °C, observing fatty acid d...

Pasta is mostly composed by wheat flour and water. Nevertheless, flour can be partially replaced by fibers to provide extra nutrients in the diet. However, fiber can affect the technological quality of pasta if not properly distributed. Usually, determinations of parameters in pasta are destructive and time-consuming. The use of Near Infrared-Hyper...

White Striping (WS) and Wooden Breast (WB) are emerging poultry myopathies that occur worldwide, affecting the quality of meat. The aim of this study was to evaluate the occurrence of N, WS, WB, and WS/WB (myopathies combined) in chicken breast from Brazilian commercial plant, comparing (1) inspection based on visual aspect and palpation of Pectora...

Pectin has several purposes in the food and pharmaceutical industry making its quantification important for further extraction. Current techniques for pectin quantification require its extraction using chemicals and producing residues. Determination of pectin content in orange peels was investigated using near infrared hyperspectral imaging (NIR-HS...

Spectral methods usually produce a large amount of data, and have been greatly applied to food and agricultural products. These products demand several analyses to determine different parameters, that will further indicate their quality. There have been several approaches reported to deal with multi-target regression in recent years, with different...

The in situ determination of metals in plants used for phytoremediation is still a challenge that must be overcome to control the plant stress over time due to metals uptake as well as to quantify the concentration of these metals in the biomass for further potential applications. In this exploratory study, we acquired hyperspectral images in the v...

There is a high potential for plant oils as alternative fuel for low and medium speed diesel engines, making petroleum-derived fuels likely to be replaced in these types of engines. Vegetable oils have important advantages over both heavy fuel oil (HFO) and marine gas oil (MGO), the fuels currently used in diesel power plants by large two stroke lo...

The hybridization of cocoa generates new varieties with the aim of opening new flavors, textures, and disease resistance. The objective of this study was to develop and validate classification models based on NIR hyperspectral imaging and chemometrics for the discrimination of five valuable cocoa bean hybrids. The chemometrics tools, PLS-DA and SVM...

Paprika powder is a widely consumed spice, making it an attractive target for adulteration, which is not easily detected. In this study, a portable near-infrared (NIR) spectrometer was used for fast detection of paprika adulteration. Nine paprika samples from five suppliers were adulterated with potato starch, acacia gum and annatto at different co...

Jatropha curcas has the ability to phytoextract high amounts of heavy metals during its first months just after seeding. Notwithstanding, there is scarce information about metal uptake by adult J. curcas plants. To shed light on this issue, 4-year-old J. curcas L. plants were planted in a soil mixture of peat moss and mining soil (high metals conte...

The demand for safer food products is constantly growing. The methods of food authentication most commonly used involve identification of physical parameters and application of chemical methods. Recently, the called “-omics” science has gained much interest, and these technologies include proteomics, metabolomics and genomics. In food adulteration...

Meat processors and consumers are greatly concerned about nutritional value, safety and quality of food products. Besides the reproducibility, which is a significant quality parameter of processed food product, the adulteration of meat products is a crucial concern for manufactures and consumers. Therefore, fast and objective techniques are demande...

Imaging sensors are largely employed in the food processing industry for quality control. Flour from malting barley varieties is a valuable ingredient in the food industry, but its use is restricted due to quality aspects such as color variations and the presence of husk fragments. On the other hand, naked varieties present superior quality with be...

Near-infrared spectroscopy is widely applied for characterization of meat products. The improvement of handheld and portable equipment has allowed the development of on-line applications in the food processing industry. Recently, the poultry industry has benefited from the advancement of applications for identification of different characteristics,...

Computer vision and near infrared spectroscopy are fast and non-invasive techniques currently available for processing control in the meat industry. These techniques can be used, either separately or combined, for on-line assessment of meat quality parameters. This study aimed to compare a portable near-infrared (NIR) spectrometer, near infrared hy...

Near Infrared (NIR) spectroscopy is an analytical technology widely used for the non-destructive characterisation of organic samples, considering both qualitative and quantitative attributes. In the present study, the combination of Multi-target (MT) prediction approaches and Machine Learning algorithms has been evaluated as an effective strategy t...