The healthy properties of bee pollen mainly depend on the botanical, geographical origin and storage conditions. This study aimed to characterise the composition of volatile compounds and describe the sensory profile of Tuscan bee pollens collected in two different areas in the same period and stored for six months under different conditions. The headspace solid-phase microextraction (HS-SPME) analyses of volatile compounds showed that non-terpene derivatives represented the predominant chemical class in all examined samples, among which aldehydes were the main compounds. Apocaroteonids and oxygenated monoterpenes were also present in lower percentages, with strong separation of the chemical profiles between room temperature samples and those of other storage conditions. The sensory profile was analysed by panel test, the bee pollen produced in the suburban area seemed to show less attractiveness, taste and olfactory. Both samples stored at room temperature showed the worst sensory profile, compared to the other storage conditions.
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http://dx.doi.org/10.1080/14786419.2024.2389312 | DOI Listing |
Tree Physiol
January 2025
Laboratoire de Biologie du Développement, UMR 7622, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, CNRS, F-75005 Paris, France.
Norway maple and sycamore belong to the Acer genus and produce desiccation-tolerant and desiccation-sensitive seeds, respectively. We investigated the seed germination process at the imbibed and germinated stages using metabolomic and proteomic approaches to determine why sycamore seeds germinate earlier and are more successful at establishing seedlings than Norway maple seeds under controlled conditions. Embryonic axes and embryonic axes with protruded radicles were analyzed at the imbibed and germinated stages, respectively.
View Article and Find Full Text PDFJ Exp Psychol Hum Percept Perform
January 2025
Department of Experimental Psychology, Helmholtz Institute, Utrecht University.
Visual working memory (VWM) is a capacity-limited cognitive system that is utilized for enabling goal-directed actions. When sampling items for VWM storage, however, observers are often exposed to other items that are not selected for imminent action (hereafter: "prospective items"). Here, we asked whether such exposure leads to memory buildup of these prospective items, facilitating subsequent VWM encoding for imminent action.
View Article and Find Full Text PDFEur J Neurol
January 2025
Brain and Mind Centre, University of Sydney, Camperdown, New South Wales, Australia.
Background And Purpose: Cerebrotendinous xanthomatosis (CTX) is a rare autosomal recessive lipid storage disease characterized by abnormal bile acid synthesis. It often presents with systemic and neurological manifestations; however, atypical presentations can lead to significant diagnostic challenges. This case report highlights the diagnostic complexities and management considerations in a patient with an uncommon presentation of CTX.
View Article and Find Full Text PDFChem Sci
December 2024
Department of Physics & Chemistry, DGIST Daegu 42988 Korea
Metal-organic frameworks (MOFs), characterized by dynamic metal-ligand coordination bonding, have pivotal roles in catalysis, gas storage, and separation processes, owing to their open metal sites (OMSs). These sites, however, are frequently occupied by Lewis-base solvent molecules, necessitating activation to expose the OMSs for practical applications. Traditional thermal activation methods involve harsh conditions, risking structural integrity.
View Article and Find Full Text PDFAquac Nutr
December 2024
Norwegian Institute of Food, Fisheries and Aquaculture Research (Nofima), Bergen, Norway.
Two short-term feeding trials were conducted on , with the interaction between dietary zinc (Zn) and fat level in trial 1 and with the interaction between dietary Zn and n-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) in trial 2, focusing on postprandial plasma parameters, intestinal Zn and fat uptake and transport. After 4-week feeding interventions, samples were collected at different postprandial time points, ranging from 0 to 36/38 h after feeding. Results showed that increased Zn level in feed significantly increased the postprandial plasma Zn level in trial 1 (8-9°C).
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