Vijaya G.S. Raghavan

Verified

Vijaya verified their affiliation via an institutional email.

Learn more

Verified

Vijaya verified their affiliation via an institutional email.

Learn more

• PhD
• Professor (Full) at McGill University

Food security is increasingly threatened by factors such as population growth, resource depletion, climate change, and unsustainable agricultural practices leading to food loss and waste. Addressing these challenges requires innovative strategies, including enhanced food preservation, functional food development, improving packaging solutions, and...

Agricultural non-point source pollution (ANPSP) significantly affects worldwide water quality, soil integrity, and ecosystems. Primary factors are nutrient runoff, pesticide leaching, and inadequate livestock waste management. Nonetheless, a thorough assessment of ANPSP sources and efficient control techniques is still lacking. This research deline...

Understanding plant hormonal responses to stress and their transport dynamics remains challenging, limiting advancements in enhancing plant resilience. Our study presents a novel approach that utilizes genetically engineered bacteria (GEB) as molecular transceivers within plants, aiming to develop revolutionary agricultural biosensors. We focus on...

Collecting soil leachate is essential for evaluating the precision and uncertainty of the measurement results of nutrition and agricultural non-point source pollution in farming and environmental management. Existing methods for collecting soil leachate frequently produce inconsistencies due to soil disturbance and temporal variability, leaving a s...

Accurate soil hardness measurement is essential for enhancing agricultural productivity and geotechnical stability. Conventional methods, such as cone penetrometers, offer limited precision as they only measure penetration resistance, without considering soil reaction forces. This study introduces a novel Fiber Bragg Grating (FBG) sensor system, wh...

To comprehend the responses and resilience of plants under unfavorable environmental conditions, it is crucial to study the metabolomics and proteomic insights into nutrient stress. Nutrient stress substantially challenges agriculture, impacting plant growth, development, and productivity due to a lack or imbalance of essential nutrients, which can...

Hazelnuts are popular among people due to their dense nutrient component. However, eating them may be quite dangerous for those who are allergic. To improve food safety, this research examines current developments in the characterization, processing, and detection of hazelnut allergens. The identification and molecular knowledge of certain proteins...

Citation: Ehiem J.C., Ndirika V.I.O., Onwuka U.N, Vijayan R. (2024): Modeling and optimization of dynamic isothermal com-pressibility features on flowability of Canarium schweinfurthii Engl nutshell powder. Res. Agr. Eng. Abstract: The compressibility features (bulk density, tapped bulk density, porosity, coefficient of compressibility and Hauser r...

This study explores the development and application of gold and 4-mercaptopyridine (MPY) perovskite-engineered robust nanofibers (GLAMPER-NFs) for the ultrasensitive detection of Abscisic acid (ABA) under Raman spectroscopy, a crucial plant hormone. The GLAMPER-NFs composite material, consisting of MAPbCl3 nanofibers integrated with MPY-coated gold...

The accurate and sensitive detection of low‐abundance cancer‐related biomarkers in blood remains a key technical challenge in clinical applications. Herein, a simple and accurate sandwich‐type electrochemical immunosensor based on a stable hydrogen‐bonded cobalt‐porphyrin framework (Co‐HOF) was successfully developed for the ultrasensitive detectio...

Air pollutant emissions from the agricultural sector are among the most critical issues affecting human health and the environment. This sector releases a complex mixture of biological, microbial, and inorganic contaminants into the air from land preparation, crop production, fertilization, harvesting, biomass burning, machinery use, livestock prod...

Foodborne disease presents a substantial challenge to researchers, as foliar water intake greatly influences pathogen internalization via stomata. Comprehending plant-pathogen interactions , especially under fluctuating humidity and temperature circumstances, is crucial for formulating ways to prevent pathogen ingress and diminish foodborne hazards...

Drying kinetics, energy utilization (EU) and shrinkage level of avocado pear pulp during drying were investigated and modeled to determine the condition that enhances the quality of the dried product. Drying was carried out using a microwave assisted dryer with data lodger. The system was set at a constant power of 200 W, air velocity of 1.4 m/s, a...

The hormone abscisic acid (ABA) is crucial in the regulation of many physiological processes in plants, particularly in stress response and developmental control. Recent developments in detection methods utilizing opto-electronic sensors have enabled a more profound comprehension of the processes linked to plant hormones, namely ABA. The present wo...

Food packaging is an indispensable process and has gained significant attention for ensuring food safety and quality, global food security, and sustainability. In recent years, intelligent and active packaging techniques based on the concept of smart packaging have become popular in the food industry. The development of innovative packaging systems...

Introduction Anaerobic digestion (AD) is essential for manure management, generating biogas and nutrient‐rich digestate for organic fertilizer. However, improper digestate use can pose environmental risks. Recovering struvite, a magnesium ammonium phosphate (MAP) compound, from digestate provides a sustainable, controlled‐release fertilizer, suppor...

Accurate determination of soil water content through dielectric properties-based methods relies heavily on a dielectric model linking the apparent dielectric constant to the volumetric water content. Recent research highlights the susceptibility of agricultural topsoil porosity to significant alterations, leading to inadequate precision in soil wat...

Modern plant physiology and environmental factor quantification technologies rely on non-contact spectroscopy, airborne/satellite photography, and machine vision. Unfortunately, many plant health monitoring systems lack spatial and temporal resolution, continuous, dependable data, and the ability to track plant health or understand how biological a...

Hydroponic cultivation is an efficient, resource-saving technology that produces high yields of high-quality products per unit area without soil. While this technology can save water and fertilisers, water recirculation increases the accumulation of root exudates known to be toxic to the plant, causing growth inhibition. The usage of bioelectrochem...

This study aimed to assess the effect of novel thermal glycation, utilizing microwave processing (100−150 °C) combined with sugars (glucose and lactose), on the in vitro protein digestibility, peptides, secondary structures, microstructures, and allergenic properties of Atlantic cod. The research demonstrated that microwave heating at 150 °C with g...

In the 19th century, wastewater was not given the proper attention, leading to its mismanagement and neglect. The increase in wastewater volume over time led to the adoption of treatment methods. Technological advancements have enabled a shift from wastewater treatment to resource recovery. Recently, resource recovery from wastewater has gained glo...

Background: This study explores the role of leguminous crops like lima bean in enhancing soil quality and ecosystem stability. Despite existing studies on agronomic aspects, there is a significant research gap on its impact on soil organic matter level, microbial activity, soil health, and nutrient availability. Therefore, this study examines the c...

Off-line leachate collection from agricultural landscapes cannot guarantee precise evaluation of agricultural non-point source (ANPS) due to geospatial variations, time, and transportation from the field to the laboratory. Implementing an in-situ nitrogen and phosphorous monitoring system with a robust photochemical flow analysis is imperative for...

Nowadays, the food industry is facing challenges due to the simultaneous rise in global warming, population, and food consumption. As the integration of synthetic biology and food science, novel synthetic foods have obtained high attention to address these issues. However, these novel foods may cause potential risks related to human health. Four ty...

In recent years, the invasive pleco fish has emerged as a global concern due to its adverse effects on ecosystems and economic activities, particularly in various water bodies in Mexico. This study introduces an innovative solution, employing microwave-assisted hydrothermal carbonization (MHTC) to synthesize hydrochar from pleco fish biomass. The r...

Farm leftovers, particularly crop residues, are a key source of renewable energy in Canada. The nation’s robust agricultural industry provides ample biomass, derived from forestry and agriculture resources, for energy generation. Crop residues, such as straws and husks, play a crucial role in this biomass reservoir, contributing to biofuel producti...

Food allergy is a significant public health concern globally. Certain probiotics have been found to enhance food allergy by regulating immune-microbe interactions in animal models and patients. However, the effects of Bifidobacterium lactis Probio-M8 on food allergy have not been thoroughly investigated. The present study examined the anti-allergic...

Accurate estimation of soil water content (SWC) is crucial for effective irrigation management and maximizing crop yields. Although dielectric property-based SWC measurements are widely used, their accuracy is still affected by soil variability, soil–sensor contact, and other factors, making the development of convenient and accurate soil-specific...

Osmotic dehydration (OD) is an efficient preservation technology in that water is removed by immersing the food in a solution with a higher concentration of solutes. The application of OD in food processing offers more benefits than conventional drying technologies. Notably, OD can effectively remove a significant amount of water without a phase ch...

Thrombin (Thr) plays various roles in cancer development and metastasis, motivating the search for ultrasensitive methods for Thr detection. Herein, we combined a single aptamer hairpin DNA-based response system (SAHRS) with a covalent organic framework (COF)-based signal amplification strategy, resulting in a COF-SAHRS electrochemical biosensor fo...

Recent advances in detection and diagnostic tools have improved understanding and identification of plant physiological and biochemical processes. Effective and safe Surface Enhanced Raman Spectroscopy (SERS) can find objects quickly and accurately. Raman enhancement amplifies the signal by 10¹⁴-10¹⁵ to accurately quantify plant metabolites at the...

Electrohydrodynamic (EHD) convective drying is a non-thermal energy-efficient technology to preserve heat-sensitive materials by dehydration. A high-voltage electrode is used to induce corona wind that increases convective heat and mass transfer in the material and air interface. A chamber used for EHD drying with a wire-to-plate configuration and...

Context Probiotics show promise in preventing and managing food allergies, but the impact of supplementation during pregnancy or infancy on children's allergies and gut microbiota remains unclear. Objective This study aimed to assess the effects of maternal or infant probiotic supplementation on food allergy risk and explore the role of gut microb...

Fresh puffer fish (Takifugu obscurus) are susceptible to microbial contamination and have a very short shelf-life of chilled storage. Hence, this study aimed to evaluate the effects of plasma-activated lactic acid (PALA) on microbiota composition and quality attributes of puffer fish fillets during chilled storage. The results showed that PALA trea...

Chemical processing and waste management are of paramount importance in the field of agriculture. As the global population continues to grow, the demand for food production is increasing, placing significant pressure on agricultural systems. Chemical processing and waste management pose significant challenges to environmental sustainability and agr...

Mangoes (Mangifera indica) are widely prized for their abundant nutritional content and variety of beneficial bioactive compounds and are popularly utilized in various foods, pharmaceuticals, and cosmetics industries. However, it is important to note that certain proteins present in mango can trigger various allergic reactions, ranging from mild or...

Citation: Abdulraheem, M.I.; Moshood, A.Y.; Li, L.; Taiwo, L.B.; Oyedele, A.O.; Ezaka, E.; Chen, H.; Farooque, A.A.; Raghavan, V.; Hu, J. Abstract: Background: This study explores the role of leguminous crops like lima bean in enhancing soil quality and ecosystem stability. Despite existing studies on agronomic aspects, there is a significant resea...

Sustainable agricultural practices help to manage and use natural resources efficiently. Due to global climate and geospatial land design, soil texture, soil–water content (SWC), and other parameters vary greatly; thus, real time, robust, and accurate soil analytical measurements are difficult to be developed. Conventional statistical analysis tool...

Over the past few decades, food allergy has continued to rise, significantly affecting our health, economy, and quality of life. However, current therapeutic strategies have limited efficacy and need to be improved. One alternative to prevent or reduce allergies is to modulate immunity and microbiota. Human milk (HM) could be considered a protectiv...

Effective waste management is a major challenge for Small Island Developing States (SIDS) like Maldives due to limited land availability. Maldives exemplifies these issues as one of the most geographically dispersed countries, with a population unevenly distributed across numerous islands varying greatly in size and population density. This study p...

The production of carotenoids by microbial organisms has gained significant interest due to the growing demand for natural products. Among the non-model oleaginous red yeasts, Rhodotorula toruloides stands out as an appealing host for natural carotenoid production. R. toruloides possesses the natural ability to metabolize a wide range of substrates...

In vivo plant hormonal detection methods are the strategies executed on living organisms while not taking out the samples from the body. Modern methods like spectroscopy, biosensors, and electrochemical sensors have increased the quality and sensitivity of the detection and decreased the cumbersome, time, and solvent-consuming preparational efforts...

Changes in behavior, lifestyle, and nutritional patterns have influenced many potential risk variables globally. In recent decades, food allergies (FAs) have been elevated to a severe public health issue both in developed countries and developing countries (third-world countries). This study aims to evaluate the effects caused by certain factors su...

Nowadays there are several innovative food processing technologies with some promising applications at the industrial scale. However, thermal processing remains as one of the most important pathways towards food safety for consumers associated with the food industry. The development of advanced thermal treatment techniques is crucial to address the...

The effective and economical 3D floating air cathodes were fabricated by a simple dipping-drying method with carbon black (CB), ethanol, and PTFE solution. Pristine Type I polyurethane sponge (5 pores/mm) and Pristine Type II polyurethane sponge (3 pores/mm) were used as the support. The deposition of CB on the Pristine Type I and Pristine Type II...

The use of electromagnetic energy for drying seeds has been shown to be a promising alternative. However, studies show that the technique still lacks careful evaluation due to the sensitivity of soybean seeds to damage caused using microwaves. Studies have shown that the use of microwaves during drying can be safe in seeds of soybeans, corn, and be...

Abstract Apple (Malus Demestica cv. Cortland) is a perishable fruit due to its high moisture content. In this study, apple sticks were dried to increase their shelf life. Osmotic dehydration was used as pretreatment followed by microwave-assisted hot air drying (MAHD) at different temperatures (45 ºC, 55 ºC, 65 ºC) and microwave power densities (0,...

Consumers rely on visual attributes when purchasing dried foods. If the product is unattractive, they walk away, leading to increase in global food waste. Attempts have been made to develop computer vision (CV) systems to monitor visual attributes of foods during the drying process. Unfortunately, figure-ground separation challenges such as overlap...

The attractive biological properties and health benefits of natural astaxanthin (AXT), including its antioxidant and anti-carcinogenic properties, have garnered significant attention from academia and industry seeking natural alternatives to synthetic products. AXT, a red ketocarotenoid, is mainly produced by yeast, microalgae, wild or genetically...

Microwaves have been applied to the drying of seeds of several species due to their maintenance of the quality of the seeds and reduction of time and costs. However, few is known about the effect of microwaves on the increase of the physiological quality of soybean seeds and especially their effects on longevity. Therefore, the use of microwaves as...

Online microwave drying process monitoring has been challenging due to the incompatibility of metal components with microwaves. This paper developed a microwave drying system based on online machine vision, which realized real-time extraction and measurement of images, weight, and temperature. An image-processing algorithm was developed to capture...

Efficient determination of antioxidant activity in medicinal plants may provide added value to extracts. The effects of postharvest pre-freezing and drying [microwave-assisted hot air (MAHD) and freeze drying] on hops and cannabis were evaluated to determine the relationship between antioxidant activity and secondary metabolites. The 2,2-diphenyl-1...

Annually , one-third of the food produced globally is lost or wasted. A considerable portion of global food waste comprises dry foods that are rejected due to their unattractive appearance. One effective technique to solve this problem is by developing dryers that consistently produce dry foods that are visually appealing and have a long shelf life...

As an agricultural plant, the cantaloupe contains rich nutrition and high moisture content. In this paper, the estimation problem of the moisture ratio model during a cantaloupe microwave drying process was considered. First of all, an image processing-based cantaloupe drying system was designed and the expression of the moisture ratio with regard...

For food drying, moisture content and shrinkage are vital in the drying process. This paper is concerned with the moisture ratio modeling and prediction issues of the Hami melon drying process. First, an experimental system was developed; it included an adjustable-power microwave drying unit and an image-processing unit. The moisture contents and t...