Tahera Naznin

• PhD in Environmental Sciences
• Professor (Associate) at University of Nevada, Reno

The extreme heat and water scarcity of the desert southwest in the United States of America present significant challenges for growing food crops. However, controlled-environment agriculture offers a promising solution for plant production in these harsh conditions. Glasshouses and plant factories represent advanced but energy-intensive production...

In this research, the manganese ion (Mn2+) in drinking water was detected using functionalized multiwalled carbon nanotubes (f-MWCNTs) and chitosan (CS) immobilised with Prussian blue. Drinking water that contained soluble manganese (Mn2+) became insoluble (Mn3+ and Mn4+) when water phytochemistry changed as a result of unpredictably high manganese...

The production of horticultural crops in the outdoor environment facing various environmental factors, such as cyclones, droughts, heavy rain, and hailstorms, significantly affects the papaya production in the sub-tropical regions, especially in Bangladesh. Protected cultivation of horticultural crops is a common practice in developed countries. Ho...

This study aimed to evaluate the effect of organic substrates on the growth yield, photosynthetic response, and nutritional profile of red leaf lettuce grown in different compositions of cocopeat (CP), sawdust (SD), and rice husk (RH). The result showed that the properties of substrates were influenced variably by their mixing ratios. The highest w...

This study aimed to examine the total viable bacteria (TVBC); total coliform (TCC); fecal coliform (TFC); pathogenic Pseudomonas spp., Staphylococcus aureus, and total fungi (TF); and the effect of different low-cost disinfectants (sterile water, saltwater, blanched, and vinegar) in decontamination of 12 types of fruit and 10 types of vegetables. I...

Production of safe food in the densely populated areas of the developing countries is the most challenging issue due to the speedy urbanization, fragile food transportation facilities, and reduced farmlands. Given this background, a study was conducted to evaluate the agronomic properties and economic viability of lettuce grown vertically in the wa...

Irrational applications of insecticides on vegetable crops are very common in Bangladesh, resulting in harmful consequences for the environment and human health. Therefore, a study was conducted to evaluate the efficacy of biological and botanical insecticides on okra shoot and fruit borer grown in open fields. Four insecticides were used in this s...

Seed priming is a technique that can potentially facilitate rapid and consistent germination and subsequent plant growth. The present study investigates the effect of different seed priming treatments and processing times on germination and growth efficiency for the effective cultivation of Yard-long bean. Thirteen different primings were used to d...

Seed priming is a technique that can potentially facilitate rapid and consistent germination and subsequent plant growth. The present study investigates the effect of different seed priming treatments and processing times on germination and growth efficiency for the effective cultivation of Yard-long bean. Thirteen different primings were used to d...

Modern technology for food safety studies includes standardized protocols and equipment. However, appropriate technology needs to step in to bridge technology dys-or malfunctioning. We examined different low-tech methods for extraction of bacteria from fresh vegetables. Standard equipment including stomacher and filter bags were compared to extract...

Ajoene is a sulfur-containing compound in garlic, which accounts for pharmaceutical quality. The aim of this study was to investigate the influence of sulfur supply on the ajoene content of garlic and to evaluate the significance for crop quality. Garlic plants were grown hydroponically in a growth chamber under artificial lighting for two months a...

Plant production in urban areas is receiving much attention due to its potential role in feeding the rapidly growing population of city dwellers. However, higher energy demands in urban plant factories are among the key challenges that need to be addressed. Artificial lighting is responsible for the most significant levels of energy consumption in...

The aim of this study was to evaluate the growth characteristics and pigment content of tomato plantlets grown under various ratios of red (R) (661 nm) and blue (B) (449 nm) LED light. In this study, three different ratios of R and B (RB) light such as 5:01, 10:01, and 19:01 along with R (100%) were used. The photosynthetic photon flux density (PPF...

Broomcorn millet (Panicum miliaceum L.) is an important nutritious ancient minor-cereal food crop. However, this crop is little explored in the food processing arena to improve its functionality. In this context, different processing methods were applied to enhance the secondary compounds of broomcorn millet. Four different individual methods such...

The aim of this study was to evaluate the grafting compatibility of different varieties of tomato (Solanum lycopersicum L.) scions on potato (Solanum tuberosum L.) rootstocks to develop a 'pomato' plant. In this study three potato varieties; Diamant (P1), Cardinal (P2) and Asterix (P3), and two tomato varieties; Bangladesh Agricultural Research Ins...

Horticultural greenhouse production in circumpolar regions (>60° N latitude), but also at lower latitudes, is dependent on artificial assimilation lighting to improve plant performance and the profitability of ornamental crops, and to secure production of greenhouse vegetables and berries all year round. In order to reduce energy consumption and en...

The aim of this study was to evaluate the grafting compatibility of different varieties of tomato (Solanum lycopersicum L.) scions on potato (Solanum tuberosum L.) rootstocks to develop a ‘pomato’ plant. In this study three potato varieties; Diamant (P1), Cardinal (P2) and Asterix (P3), and two tomato varieties; Bangladesh Agricultural Research Ins...

The aim of this study was to investigate the different combinations of red (R) and blue (B) light emitting diode (LEDs') lighting effects on growth, pigment content, and antioxidant capacity in lettuce, spinach, kale, basil, and pepper in a growth chamber. The growth chamber was equipped with R and B light percentages based on total light intensity...

Plants require light for photosynthesis and to control many hormonal and morphological changes in the cellular system, with specific colors of light resulting in improved photosynthesis. Changes in the wavelength spectrum have resulted variations in plant biomass production and morphology due to perturbations in the ratio of red/far-red spectrum an...

Light emitting diodes (LEDs) can be selected to target the wavelengths absorbed by plants, enabling the users to customize the wavelengths of light required for maximum production. The purpose of this study was to evaluate the growth and antioxidant accumulation in coriander plants cultured under various ratios of red to blue LEDs. Four light treat...

Red and blue light emitting diodes (LEDs) are known to be effective for enhancing plant growth. The aim of this study was to evaluate the growth of strawberry plants under different red:blue light ratios from LEDs compared with high pressure sodium lamps (HPS). In this study, three ratios of red (661 nm) to blue (449 nm) LED light (5:1, 10:1 and 19...

The integration of hydroponics with aquaculture is known as Aquaponic, is gaining increased attention as a bio-integrated food production system. The research presented highlights our ability to link hydroponic garlic culture with tilapia fish production system to increase food production. The experiment consisted of three treatments included garli...

Life support and effective countermeasures against damaging space radiation for humans on long-duration space missions will be highly dependent on the amount of food and efficient conversion of CO2/O2. The cultivation of fresh vegetables enriched in phytomedicine is an alternative option for keeping crews' health and recycling of CO2 in a closed en...

Light is important for precise management of plant physiological responses and important secondary metabolite production. The objectives of this study were to determine the effects of different light intensities on tissue biomass and secondary metabolite ajoene accumulation in garlic. In this experiment, hydroponically cultured garlic plants were g...

Light emitting diodes (LEDs) can be selected to target the wavelengths absorbed by plantlets, enabling the users to customize the wavelengths of light required for maximum production. The primary purpose of this experiment was to test the effect of different ratios of red to blue LEDs on tomato plantlets photosynthetic action spectrum. Four light t...

Light emitting diodes (LEDs) can be selected to target the wavelengths absorbed by plantlets, enabling the users to customize the wavelengths of light required for maximum production. The primary purpose of this experiment was to test the effect of different ratios of red to blue LEDs on tomato plantlets photosynthetic action spectrum. Four light t...

Greenhouses in northern latitudes must compensate for the attenuation in total light availability especially during the prolonged winter with short daylight hours, where supplemental artificial lighting is required in order to maintain a consistent crop yield throughout the year. Conventional greenhouse lighting systems utilize broad-spectrum light...

Light emitting diodes (LEDs) are an emerging versatile artificial light source offering many advantages over conventional artificial light sources. This could eventually allow determination of the ideal light emission spectrum for optimal plant growth, allowing for lighting system designs tailored to optimize plant growth while minimizing associate...

Light emitting diodes (LEDs) offer great advantages, which include a long lifetime (> 10,000 hr), small size, low thermal output, and adjustable light intensity, over conventional light sources (e.g. incandescent, fluorescent, high pressure sodium). Moreover, LEDs can have very narrow wavelengths (~30 nm) and are easily adjusted for irradiance leve...

Light emitting diodes (LEDs) offer great advantages, which include a long lifetime (> 10,000 hr), small size, low thermal output, and adjustable light intensity, over conventional light sources (e.g. incandescent, fluorescent, high pressure sodium). Moreover, the progression of that in recent years has been driven by numerous applications, such as...

Light emitting diodes (LEDs) are an emerging versatile artificial light source offering many advantages over conventional artificial light sources, including high energy efficiency, long life, and especially the possibility to test out the effects of many different spectral combinations of wavelengths on plant growth and development. This could eve...

Recent irradiance level improvements in light-emitting diode (LED) technology has allowed this equipment to compete as suitable replacements to traditional highpressure sodium (HPS) lamps in hydroponics growth environments. The current study compares LED and HPS lighting technologies for supplemental lighting in a greenhouse at HydroSerre Mirabel (...

Antioxidative activities of E- and Z-ajoene prepared from Japanese garlic were studied using various radical scavenging effects. Among the various antioxidative activities tested, ajoene was found to show the highest hydroxyl radicals scavenging activity (E-ajoene = 50% and Z-ajoene = 63%). These ajoene were 5.2-13 times less efficient at reducing...

Application of ajoene to mayonnaise and its stability were studied. Addition of 5, 10, 15, 20, 25 and 30% garlic oil containing ajoene to mayonnaise recovered E-ajoene 47.7–62.4 μg/10g mayonnaise and Z-ajoene 42–74 μg/10g mayonnaise. After one month storage 99% E- and Z-ajoene remained. In 20% substituted mayonnaise 72% and 69% E- and Z-ajoene resp...

A hydroponie culture system was developed for producing garlic bulbs and roots containing a precursor of ajoene. Gariic plants were cultured in a growth chamber under artificial lighting for 2 months at air temperatures of 25°/21°C (light/dark), relative humidities of 75%/90% (light/dark), a photosynthetic photon flux density of 450 umol m-2 s-1, a...

Synthesised E- and Z-ajoene were used to determine their amounts in food oils containing various fresh garlics. The best yield of E-ajoene (172.0 μg/g of garlic) and Z-ajoene (476.0 μg/g of garlic) was obtained from freshly prepared Japanese garlic with rice oil which was heated at 80 °C. Determination of E- and Z-ajoene from soybean oil containing...