References
- Alaux, C., Ducloz, F., Crauser, D., & Le Conte, Y. (2010). Diet effects on honeybee immunocompetence. Biology Letters, 6(4), 562–565. https://doi.org/https://doi.org/10.1098/rsbl.2009.0986
- Almaraz-Abarca, N., Campos, M. G., Avila-Reyes, A., Naranjo-Jimenez, N., Herrera-Corral, J., & Gonzales-Valdez, L. S. (2004). Variability of antioxidant activity among honeybee-collected pollen of different botanical origin. Intersciencia, 29, 574–578.
- Arenas, A., & Farina, W. M. (2012). Learned olfactory cues affect pollen-foraging preferences in honeybees, Apis mellifera. Animal Behaviour, 83(4), 1023–1033. https://doi.org/https://doi.org/10.1016/j.anbehav.2012.01.026
- Bogdanov, S. (2017). The Bee Pollen Book. Retrieved January 6, 2018 from http://www.bee-hexagon.net/pollen/
- Campos, M. G., Webby, R., F., Markham, K. R., Mitchell, K. A., & Da Cunha, A. P. (2003). Age-induced diminution of free radical scavenging capacity in bee pollens and the contribution of constituent flavonoids. Journal of Agricultural and Food Chemistry, 51(3), 742–745. https://doi.org/https://doi.org/10.1021/jf0206466
- Di Paolo-Naranjo, R., Sanchez-Sanchez, J., Gonzalez-Paramas, A. M., & Rivas-Gonzalo, J. C. (2004). Liquid chromatographic-mass spectrometric analysis of anthocyanin composition of dark blue bee pollen from Echium plantagineum. Journal of Chromatography A, 1054, 205–210.
- Esmaeili, A. K., Taha, R. T., Mohajer, S., & Banisalam, B. (2015). Antioxidant activity and total phenolic and flavonoid content of various solvent extracts from in vivo and in vitro grown Trifolium pratense L. (Red Clover). BioMed Research International, 2015, 643285.
- Forcone, A., Aloisi, P. V., Ruppel, S., & Muñoz, M. (2011). Botanical composition and protein content of pollen collected by Apis mellifera L. in the north-west of Santa Cruz (Argentinean Patagonia). Grana, 50(1), 30–39. https://doi.org/https://doi.org/10.1080/00173134.2011.552191
- Gronquist, M., Bezzerides, A., Attygalle, A., Meinwald, J., Eisner, M., Eisner, T. (2001). Attractive and defensive functions of the ultraviolet pigments of a flower (Hypericum calycinum). Proceedings of the National Academy of Sciences of the United States of America, 98, 13745–13750.
- Herbert, E. W., Shimanuki, H., & Caron, D. (1977). Optimum protein levels required by honey bees (Hymenoptera, Apidae) to initiate and maintain brood rearing. Apidologie, 8(2), 141–146. https://doi.org/https://doi.org/10.1051/apido:19770204
- Julkunen-Tiitto, R., & Sorsa, S. (2001). Testing the effects of drying methods on willow flavonoids, tannins, and salicylates. Journal of Chemical Ecology, 27(4), 779–789. https://doi.org/https://doi.org/10.1023/a:1010358120482
- Katanić, J., Boroja, T., Stanković, N., Mihailović, v., Mladenović, M., Kreft, S., Miroslav, M., & Vrvić, M. M. (2015). Bioactivity, stability and phenolic characterization of Filipendula ulmaria (L.) Maxim. Food & Function, 6(4), 1164–1175. https://doi.org/https://doi.org/10.1039/c4fo01208a
- Keller, I., Fluri, P., & Imdorf, A. (2005). Pollen nutrition and colony development in honey bees – Part I. Bee World, 86(1), 3–10. https://doi.org/https://doi.org/10.1080/0005772X.2005.11099641
- Kicel, A., & Wolbiś, M. (2013). Phenolic content and DPPH radical scavenging activity of the flowers and leaves of Trifolium repens. Natural Product Communications, 8(1), 99–102.
- Kirk, W. D. (1994). A colour guide to pollen loads of the honey bee. International Bee Research Association.
- Liu, F.-L., Zhang, X.-W., Chai, J.-P., & Yang, D.-R. (2006). Pollen phenolics and regulation of pollen foraging in honeybee colony. Behavioral Ecology and Sociobiology, 59(4), 582–588. https://doi.org/https://doi.org/10.1007/s00265-005-0084-x
- Lunau, K. (2000). The ecology and evolution of visual pollen signals. Plant Systematics and Evolution, 222(1–4), 89–111. https://doi.org/https://doi.org/10.1007/BF00984097
- Mărghitaş, L. A., Stanciu, O. G., Dezmirean, D. S., Bobiş, O., Popescu, O., Bogdanov, S., & Campos, M. G. (2009). In vitro antioxidant capacity of honeybee-collected pollen of selected floral origin harvested from Romania. Food Chemistry, 115(3), 878–883. https://doi.org/https://doi.org/10.1016/j.foodchem.2009.01.014
- Markham, K. R., & Campos, M. (1996). 7- and 8-o-methylherbacetin-3-o-sophorosides from bee pollens and some structure/activity observations. Phytochemistry, 43(4), 763–767. https://doi.org/https://doi.org/10.1016/0031-9422(96)00286-5
- Natella, F., Nardini, M., Di Felice, M., & Scaccini, C. (1999). Benzoic and cinnamic acid derivatives as antioxidants: Structure–activity relation. Journal of Agricultural and Food Chemistry, 47(4), 1453–1459. https://doi.org/https://doi.org/10.1021/jf980737w
- Nissinen, K., Nybakken, L., Virjamo, V., & Julkunen-Tiitto, R. (2016). Slow-growing Salix repens (Salicaceae) benefits from changing climate. Environmental and Experimental Botany, 12, 59–68.
- Nybakken, L., Hörkkä, R., & Julkunen-Tiitto, R. (2012). Combined enhancements of temperature and UVB influence growth and phenolics in clones of the sexually dimorphic Salix myrsinifolia. Physiologia Plantarum, 145(4), 551–564. https://doi.org/https://doi.org/10.1111/j.1399-3054.2011.01565.x
- Roulston, T. H., Cane, J. H., & Buchmann, S. L. (2000). What governs protein content of pollen: pollinator preferences, pollen–pistil interactions, or phylogeny? Ecological Monographs, 70, 617–643.
- Schepetkin, I. A., Ramstead, A. G., Kirpotina, L. N., Voyich, J. M., Jutila, M. A., & Quinn, M. T. (2016). Therapeutic potential of polyphenols from Epilobium angustifolium (Fireweed). Phytotherapy Research: PTR, 30(8), 1287–1297. https://doi.org/https://doi.org/10.1002/ptr.5648
- Shahidi, F., & Ambigaipalan, P. (2015). Phenolics and polyphenolics in foods, beverages and spices: Antioxidant activity and health effects. Journal of Functional Foods, 18, 820–897. https://doi.org/https://doi.org/10.1016/j.jff.2015.06.018
- Salonen, A. (2011). Boreal unifloral honeys: Screening properties and composition. Publications of the University of Eastern Finland. Dissertations in Forestry and Natural Science, 51p.
- Salonen, A., Ollikka, T., Grönlund, E., Ruottinen, L., & Julkunen-Tiitto, R. (2009). Pollen analyses of honey from Finland. Grana, 48(4), 281–289. https://doi.org/https://doi.org/10.1080/00173130903363550
- Sawyer, R. (1981). Pollen identification for beekeepers. University College Cardiff Press.
- Szczesna, T. (2006). Protein content and amino acid composition of bee-collected pollen from selected botanical origin. Journal of Apicultural Science, 50, 81–90.
- Vogt, T., Wollenweber, E., & Taylor, L. P. (1995). The structural requirements of flavonols that induce pollen germination of conditionally male fertile petunia. Phytochemistry, 38(3), 589–592. https://doi.org/https://doi.org/10.1016/0031-9422(94)00703-V
- Thorp, R. W. (2000). The collection of pollen by bees. Plant Systematics and Evolution, 222(1-4), 211–223. https://doi.org/https://doi.org/10.1007/BF00984103
- Tóth, B. H., Blazics, B., & Kéry, A. (2009). Polyphenol composition and antioxidant capacity of Epilobium species. Journal of Pharmaceutical and Biomedical Analysis, 49(1), 26–31. https://doi.org/https://doi.org/10.1016/j.jpba.2008.09.047