Author
Kevin M. Crosby
Other affiliations: Texas A&M University System
Bio: Kevin M. Crosby is an academic researcher from Texas A&M University. The author has contributed to research in topics: Ascorbic acid & Cucumis. The author has an hindex of 20, co-authored 97 publications receiving 3585 citations. Previous affiliations of Kevin M. Crosby include Texas A&M University System.
Topics: Ascorbic acid, Cucumis, Melon, Citrullus lanatus, Biology
Papers published on a yearly basis
Papers
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TL;DR: Guava fruit extracts were analyzed for antioxidant activity measured in methanol extract and dichloromethane extract (AOAD), ascorbic acid, total phenolics, and total carotenoids contents.
2,737 citations
TL;DR: Grafting is rare in the United States, due in part to cost and availability of facilities, but with continued loss of quality disease-free farmland along with the phase out of methyl bromide, vegetable grafting is an attractive option.
214 citations
TL;DR: The results of the present study demonstracted that seed priming with AgNPs can enhance seed germination, growth, and yield while maintaining fruit quality through an eco-friendly and sustainable nanotechnological approach.
Abstract: Seed priming uses treatments to improve seed germination and thus potentially increase growth and yield. Low-cost, environmentally friendly, effective seed treatment remain to be optimized and tested for high-value specialty crop like watermelon (Citrullus lanatus) in multi-locations. This remains a particularly acute problem for triploids, which produce desirable seedless watermelons, but show low germination rates. In the present study, turmeric oil nanoemulsions (TNE) and silver nanoparticles (AgNPs) synthesized from agro-industrial byproducts were used as nanopriming agents for diploid (Riverside) and triploid (Maxima) watermelon seeds. Internalization of nanomaterials was confirmed by neutron activation analysis, transmission electron microscopy, and gas chromatography-mass spectrometry. The seedling emergence rate at 14 days after sowing was significantly higher in AgNP-treated triploid seeds compared to other treatments. Soluble sugar (glucose and fructose) contents were enhanced during germination in the AgNP-treated seeds at 96 h. Seedlings grown in the greenhouse were transplanted at four locations in Texas: Edinburg, Pecos, Grapeland, and Snook in 2017. At Snook, higher yield 31.6% and 35.6% compared to control were observed in AgNP-treated Riverside and Maxima watermelons, respectively. To validate the first-year results, treated and untreated seeds of both cultivars were sown in Weslaco, Texas in 2018. While seed emegence and stand establishments were enhanced by seed priming, total phenolics radical-scavenging activities, and macro- and microelements in the watermelon fruits were not significantly different from the control. The results of the present study demonstracted that seed priming with AgNPs can enhance seed germination, growth, and yield while maintaining fruit quality through an eco-friendly and sustainable nanotechnological approach.
144 citations
TL;DR: Several good candidate parents were identified for the breeding program to develop novel pepper varieties with increased health benefits, and there were no significant differences among locations for flavonoid concentrations.
93 citations
TL;DR: Overall, lycopene and vitamin C content did not decrease with de®cit irrigation at 0.75 ET, and there was genetic variability for Lycopene, vitamin C, and sugar composition, primarily fructose, among diploids and triploids.
Abstract: SummaryMany vegetable production regions in the southwestern US are strictly regulated on water use. In addition, demand for high quality and nutritious vegetables has increased. This study was performed to explore the effects of de®cit irrigation on yield, fruit quality, lycopene content, vitamin C and sugar composition of red-¯eshed diploid and triploid watermelon (Citrullus lanatus (Thunb) Matsum & Nakai) cultivars. Irrigation treatments were 1.0, 0.75 and 0.5 evapotranspiration (ET) rates. Cultivars used were `Summer Flavor 710', `RWM 8036', `Allsweet', `Sugarlee', and `SWD 7302' (diploids) and `Summer Sweet 5244', `SWT 8706', `Sugar Time', and `Tri X Sunrise' (triploids). Total water applied through a subsurface drip system was 395, 298 and 173.mm, for the 1.0, 0.75 and 0.50 ET rates, respectively. Total yields were highest at 1.0 ET (53.9 t ha±1) compared with 0.5 ET (26.8.tha±1). Triploids had a 34% higher total yield and fewer culls (2%) compared with diploid cultivars (25%). Highest yields were o...
77 citations
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TL;DR: A significant relationship between antioxidant capacity and total phenolic content was found, indicating that phenolic compounds are the major contributors to the antioxidant properties of these plants.
Abstract: Aqueous extracts of 30 plants were investigated for their antioxidant properties using DPPH and ABTS radical scavenging capacity assay, oxygen radical absorbance capacity (ORAC) assay, superoxide dismutase (SOD) assay, and ferric reducing antioxidant potential (FRAP) assay. Total phenolic content was also determined by the Folin−Ciocalteu method. Antioxidant properties and total phenolic content differed significantly among selected plants. It was found that oak (Quercus robur), pine (Pinus maritima), and cinnamon (Cinnamomum zeylanicum) aqueous extracts possessed the highest antioxidant capacities in most of the methods used, and thus could be potential rich sources of natural antioxidants. These extracts presented the highest phenolic content (300−400 mg GAE/g). Mate (Ilex paraguariensis) and clove (Eugenia caryophyllus clovis) aqueous extracts also showed strong antioxidant properties and a high phenolic content (about 200 mg GAE/g). A significant relationship between antioxidant capacity and total phe...
1,358 citations
TL;DR: In this paper, the 50 most popular antioxidant-rich fruits, vegetables and beverages in the US diet were identified and analyzed for their antioxidant capacities, total phenolics and flavonoids content.
1,131 citations
TL;DR: In this article, a study was conducted using Buchi mini spray dryer B-191 to produce spray-dried watermelon powders using two different maltodextrin concentrations (3% and 5%) as the encapsulating agent and four different inlet temperatures (145°C, 155¼C, 165 ¼C and 175¼°C).
Abstract: A study was conducted using Buchi mini spray dryer B-191 to produce spray-dried watermelon powders using two different maltodextrin concentrations (3% and 5%) as the encapsulating agent and four different inlet temperatures (145 °C, 155 °C, 165 °C and 175 °C). The spray-dried watermelon powders were analysed for moisture content, dissolution, water activity, colour, lycopene and β-carotene. Results demonstrated that as inlet temperature increased, the moisture content and dissolution decreased. However, there were no significant changes in the water activities of the spray-dried powders for all the inlet temperatures investigated. Colormetric analyses showed that the L * , a * , b * , hue and chroma values changed with the inlet temperatures. The results were well correlated to the lycopene and β-carotene contents of the spray-dried powders.
671 citations
TL;DR: Rosemary extract was found to have a higher phenolic content than blackseed essential oil, which was utilised in explaining the higher antioxidant activity of rosemary extract.
661 citations
TL;DR: In this article, Andean blackberry, capuli cherry peel and banana passion fruit were analysed for total soluble phenolic compounds content and for antioxidant capacity, using three different methods (DPPH, FRAP and ABTS + ).
634 citations