Correction: Structural Studies of the Lipopolysaccharide from the Fish Pathogen Aeromonas veronii Strain Bs19, Serotype O16. Mar. Drugs 2014, 12, 1298–1316     

Anna Turska-Szewczuk  Katarzyna A. Duda  Dominik Schwudke  Agnieszka Pekala  Alicja Kozinska  Otto Holst 《Marine drugs》2014,12(9):4741-4742

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Spray-drying Microencapsulation of an Extract from Tilia tomentosa Moench Flowers: Physicochemical Characterization and in Vitro Intestinal Activity     

Mainente  Federica  Piovan  Anna  Zanoni  Francesca  Chignola  Roberto  Cerantola  Silvia  Faggin  Sofia  Giron  Maria Cecilia  Filippini  Raffaella  Seraglia  Roberta  Zoccatelli  Gianni 《Plant foods for human nutrition (Dordrecht, Netherlands)》2022,77(3):467-473

Plant Foods for Human Nutrition - Silver linden (Tilia tomentosa Moench, TtM) flowers possess several health-promoting properties, especially at the neurological level, such as intestinal...  相似文献   

Antiadhesion and antibiofilm activities of high molecular weight coffee components against Streptococcus mutans     

Stauder M  Papetti A  Mascherpa D  Schito AM  Gazzani G  Pruzzo C  Daglia M 《Journal of agricultural and food chemistry》2010,58(22):11662-11666

In previous studies we demonstrated that green and roasted coffee contains low molecular weight (LMW) compounds capable of inhibiting the ability of Streptococcus mutans, the major causative agent of human dental caries, to adhere to hydroxyapatite (HA) beads. This study addressed the ability of the whole high molecular weight coffee fraction (cHMW) and of its melanoidin and non-melanoidin components (GFC1-5), applied at concentrations that occur in coffee beverages, to (i) inhibit S. mutans growth; (ii) affect S. mutans sucrose-dependent adhesion to and detachment from saliva-coated HA beads (sHA); and (iii) inhibit biofilm development on microtiter plates. The results indicated that only cHMW is endowed with antimicrobial activity. The cHMW fraction and each of the five GFC components inhibited S. mutans adhesion, the strongest effect being exerted by cHMW (91%) and GFC1 (88%). S. mutans detachment from sHA was four times greater (～20%) with cHMW and the GFC1 and GFC4 melanoidins than with controls. Finally, biofilm production by S. mutans was completely abolished by cHMW and was reduced by 20% by the melanoidin components GFC2 and GFC4 and by the non-melanoidin component GFC5 compared with controls. Altogether these findings show that coffee beverage contains both LMW compounds and HMW melanoidin and non-melanoidin components with a strong ability to interfere in vitro with the S. mutans traits relevant for cariogenesis.  相似文献   

β-cyclodextrin and caffeine complexes with natural polyphenols from olive and olive oils: NMR, thermodynamic, and molecular modeling studies     

Rescifina A  Chiacchio U  Iannazzo D  Piperno A  Romeo G 《Journal of agricultural and food chemistry》2010,58(22):11876-11882

Complexes of β-cyclodextrin (β-CD) and caffeine (Caf) with biophenols present in olive and olive oil (tyrosol, hydroxytyrosol, homovanillic acid, 3,4-dihydroxyphenylacetic acid, and protocatechuic acid) were investigated by NMR spectroscopy and thermodynamical-molecular dynamic studies to verify the formation of supermolecular aggregates. The obtained results indicated that the investigated biophenols form inclusion complexes with β-CD in a molar ratio of 1:1 in aqueous solution having binding constant values from 10- to 40-fold bigger than those of the corresponding complexes with Caf. Then, β-CD preferentially encloses the biophenol molecule, decreasing its bitter taste and, at the same time, preserving it against chemical and physical decomposition reactions that occur during storage.  相似文献   

Phosphorus Fractions Transformation in Sediments Before and After Cyanobacterial Bloom: Implications for Reduction of Eutrophication Symptoms in Dam Reservoir     

Adriana Anna Trojanowska  Katarzyna Izydorczyk 《Water, air, and soil pollution》2010,211(1-4):287-298

In order to observe the spatial phosphorus (P) fractions transformations in sediments in relation to bacterial abundance and enzyme hydrolysing organic P-alkaline phosphatase (APA), samples from 35 stations from eutrophic Sulejow Reservoir were taken in spring after flood and in summer after cyanobacterial bloom breakdown. The results show pronounced fluctuations: decrease of average total P in sediments, despite organic matter delivery after cyanobacterial bloom, in parallel with increase of labile P (8.3%) and Ca-bounded P (16.6%) fractions and decline of organic P fraction (28.5%). Higher alkaline activity in sediments in the spring delivered nutrients to water column and supported cyanobacterial bloom development during the summer. Positive correlation between APA and organic P (r?=?0.37, p?<?0.01, n?=?70) and negative with labile inorganic P (r?=??0.44, p?<?0.01, n?=?70) in sediments proved significant role of the APA in phosphorus transformation in sediments and internal loading in the reservoir. During summer, APA was significantly related to bacterial number (r?=?0.36, p?<?0.01, n?=?35) and bacterial abundance was correlated to organic matter content (r?=?0.36, p?<?0.01, n?=?35). Such pattern of temporal variations of P transformation in sediments indicates order of solutions for enhancement of recultivation effects of eutrophic dam reservoirs: (1) reduction of organic matter supply in spring and (2) sediment inactivation during summer.  相似文献   

Identification of S-haplotypes of European cultivars of sour cherry     

Anna Lisek  Danuta Kucharska  Agnieszka Głowacka  Elżbieta Rozpara 《The Journal of Horticultural Science and Biotechnology》2017,92(5):484-492

The sour cherry is known to exhibit the phenomenon of gametophytic self-incompatibility which prevents self-fertilization. In sour cherry, besides self-incompatible cultivars, there often occur self-compatible cultivars. This is due to the occurrence of natural mutations of the S-RNase or SFB genes and, consequently, loss of functionality of S-alleles. Here we present the results of the identification of S-haplotypes of 21 cultivars of sour cherry from various regions of Europe. The analyses were performed using methods based on the amplification of intron I and intron II of the S-RNase gene and fragments specific to the individual alleles of the S-RNase or SFB genes. The tested cultivars were found to contain 15 S-haplotypes: S₁, S_1?, S₄, S₆, S_6m, S_6m2, S₉, S₁₂, S₁₃, S_13?, S₂₆, S₃₅, S_36a, S_36b, and S_36b2. The most frequently occurring S-haplotypes were S_13? (61.9%), S_36a (57.1%), and S₂₆ (47.6%). On the basis of the results, 17 of the 21 cultivars were deduced to be self-compatible. The results will be of use in the production of sour cherry fruit by facilitating the selection of suitable pollinating cultivars. The results are also expected to be useful in the breeding of new cultivars of sour cherry when selecting genotypes for crosses.  相似文献   

ESLab application to a boreal watershed in southern Finland: preparing for a virtual research environment of ecosystem services     

Maria Holmberg  Anu Akujärvi  Saku Anttila  Lauri Arvola  Irina Bergström  Kristin Böttcher  Xiaoming Feng  Martin Forsius  Inese Huttunen  Markus Huttunen  Yki Laine  Heikki Lehtonen  Jari Liski  Laura Mononen  Katri Rankinen  Anna Repo  Vanamo Piirainen  Pekka Vanhala  Petteri Vihervaara 《Landscape Ecology》2015,30(3):561-577

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Genetic transformation of Eustoma grandiflorum Griseb. by microprojectile bombardment     

Laura Semeria  Anna Maria Vaira  Gian Paolo Accotto  Andrea Allavena 《Euphytica》1995,85(1-3):125-130

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New aspects of soybean somatic embryogenesis   总被引：4，自引：0，他引：4  

Anna Nadolska-Orczyk  Waclaw Orczyk 《Euphytica》1994,80(1-2):137-143

Somatic embryo formation from immature cotyledons was improved in the following ways: by cutting into sections, supplementing culture media with spermine and using solid/liquid/solid type of culture. Cut cotyledons of the eight genotypes examined expressed a higher ability for somatic embryogenesis than whole cotyledons. Of the three polyamines tested, spermine considerably stimulated and putrescine slightly inhibited induction of somatic embryos. The ability of embryoid formation on medium with spermidine depended on the genotype. The solid/liquid/solid type of culture was better than the continuous solid culture. The best nitrogen ion content for the subculture of somatic embryos was 10 mM NH₄NO₃ and 30 mM KNO₃. The possibility of using these modifications in Agrobacterium transformation is discussed.  相似文献   

Structural observations during androgenic microspore culture of the 4c1 genotype of Zea mays L.     

Anna Pretova  Norbert C.A. de Ruijter  André A.M. van Lammeren  Jan H.N. Schel 《Euphytica》1992,65(1):61-69

Summary The capacity of the maize genotype 4c1 to regenerate microcalli and embryos from cultured microspores has been examined by comparing various cold pretreatments and culture media, using microspores and pollen at different stages of development. Viability of cultured cells was tested with FDA and their development was traced with light and fluorescence microscopy using DAPI as a nuclear dye.It was found that a pre-incubation of dissected flowers floating in a liquid nutrient medium at 8°C during 10–14 days was most successful for the induction of cell division. Among the developmental stages tested only the microspores appeared to regenerate. Subculture at 25°C in the same liquid medium, supplemented with 0.1 mg/l TIBA, gave highest rates of microspore division, i.e. up to 70% at 4 to 6 days of culture.All pathways described earlier for maize androgenic embryogenesis were observed within the 4c1 genotype. Symmetric divisions occurred in cultured microspores but most frequently asymmetric divisions lead to the formation of microcalli within 12 days of culture. In at least 60% of all dividing microspores cells were derived from the generative nucleus. Microcalli further developed either into loose or compact calli. Compact calli formed embryo-like structures.Abbreviations DAPI 4,6-diamidino-2-phenylindole - Dicamba 3,6-dichloro-2-methoxy benzoic acid - 2,4D 2,4 dichlorophenoxyacetic acid - FDA fluorescein diacetate - PAA phenylacetic acid - TIBA 2,3,5-triiodobenzoic acid - YP medium Yu-Pei basal salt medium  相似文献