Ograniczanie wyników

Czasopisma help

  1. 5 Acta Physiologiae Plantarum

  2. 4 Herba Polonica

  3. 3 Ekonatura

  4. 2 Aura

  5. 2 Bromatologia i Chemia Toksykologiczna

Więcej...
Autorzy help

  1. 6 Gramza-Michalowska A.

  2. 4 Nagar P. K.

  3. 2 Jambor J.

  4. 2 Jezierska M.

  5. 2 Marczynski Z.

Więcej...
Lata help

  1. 2 2021

  2. 4 2018

  3. 3 2017

  4. 1 2015

  5. 1 2014

Więcej...
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 37

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  Camellia sinensis
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Phylogenetic inference of Ericales based on plastid genomes and implication of cp-SSRs

100%
Hazra A., Das S., Bhattacharya S., Sur S., Sengupta C., Das S.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2021
|
tom 102
|
nr 3
2

Changes in endogenous abscisic acid and phenols during winter dormancy in tea [Camellia sinensis L.[O] Kuntze]

100%
Nagar P. K.
Acta Physiologiae Plantarum
|
1996
|
tom 18
|
nr 1
3

Isolation and expression of CsFAD7 and CsFAD8, two genes encoding omega-3 fatty acid desaturase from Camellia sinensis

86%
Ma Q.-P., You E., Wang J., Wang Y., Ding Z.-T.
Acta Physiologiae Plantarum
|
2014
|
tom 36
|
nr 09
The plastidial ω-3 fatty acid desaturase catalyses the production of trienoic fatty acids (TAs) in plant chloroplasts and plays an important role in plant responses to environmental stress. In this study, the full-length cDNAs encoding two plastidial ω-3 desaturases, designated CsFAD7 and CsFAD8 (GenBank Accession No. JX943516 and KC847167, respectively), were isolated from the tea plant (Camellia sinensis L.) using RT-PCR and RACE. Codon usage analysis revealed that U- and A-ended codons were preferentially used in these two genes. Sequence analysis showed that the deduced amino acid sequences of CsFAD7 and CsFAD8 had high homology to plastidial ω-3 desaturases from other plant species. Expression analysis by real-time PCR revealed that both genes are tissue-specific and expressed the highest levels in shoots. Meanwhile, CsFAD7 and CsFAD8 responded to various abiotic stresses and hormones, but in very different manners. Taken together, these results suggest that CsFAD7 and CsFAD8 are both responsive to abiotic stress signals; however, they may play very different roles during stress tolerance in tea plants.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Actual solubility (S|real.|), level of hydrophilic-lipophilic balance (HLBRequ., HLBD, HLBG) and partition coefficient (log P) of phytochemicals contained in Ext. Camellia sinensis L. aqu. siccum in the light of general Hildebrand- Scatchard-Fedors theory of solubility

86%
Marczynski Z., Skibska B., Nowak S., Jambor J., Zgoda M. M.
Herba Polonica
|
2018
|
tom 64
|
nr 2
Using the general Hildebrand-Scatchard-Fedors theory of solubility, the mole fraction (x2) of solubility of phytochemicals contained in the dry green tea leaves was calculated which determines the profile of pharmacological activity.The applicative purpose of the study was to estimate the actual solubility of phytochemicals – S|real.| [mol/dm3] in water and in water-ethanol solutions of diversified polarity (εM) for their selective extraction and optimal formulation of oral solid dosage form.The basic physico-chemical and structural quantities of phytochemicals and corresponding mathematical equations of general Hildebrand-Scatchard-Fedors theory of solubility were used to calculate the actual solubility – S|real.| and the level of hydrophilic-lipophilic balance (HLB).The calculated actual solubility values – S|real.| [mol/dm3] collated with correlation equations enabled the assessment of phytochemical capability for the process of mass exchange on phase boundary. Correlation equations for the dependence log P = f (– log S|real.|) point to the structural preferences of phytochemicals in the kinetics of the mass exchange (diffusion) through the natural phase boundary.Calculations and correlations between the values characterizing the actual solubility – S|real.|, media polarity (water, ethanol and their solutions) and the partition coefficient (log P) including the level of hydrophilic-lipophilic balance (HLB) show that basing on thermodynamic components of the general Hildebrand-Scatchard-Fedors theory of solubility, the diffusion profile of phytochemicals contained in the green tea extract (Ext. Camellia sinensis L. aqu. siccum) through the biological phase boundary as well as optimal choice of the extraction medium for selective extraction of the class of phytochemicals can be estimated.
5

Changes in endogenous gibberellin activity during winter dormancy in tea [Camellia sinensis [L.] O.Kuntze]

86%
Nagar P. K., Kumar A.
Acta Physiologiae Plantarum
|
2000
|
tom 22
|
nr 4
6

Analiza wplywu ekstraktow herbaty Camellia sinensis na stabilnosc oksydacyjna tluszczu zwierzecego

81%
Gramza-Michalowska A.
Bromatologia i Chemia Toksykologiczna
|
2008
|
tom 41
|
nr 3
777-781
7

Antyoksydacyjne wlasciwosci zielonej herbaty

81%
Ostrowska J., Stankiewicz A., Skrzydlewska E.
Bromatologia i Chemia Toksykologiczna
|
2001
|
tom 34
|
nr 2
131-140
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of Camellia sinensis extract on the expression level of transcription factors and cytochrome P450 genes coding phase I drug-metabolizing enzymes

72%
Bogacz A., Karasiewicz M., Bartkowiak-Wieczorek J., Ozarowski M., Seremak-Mrozikiewicz A., Kujawski R., Mikolajczak P. L., Mrozikiewicz-Rakowska B., Bobkiewicz-Kozlowska T., Czerny B., Grzeskowiak E., Mrozikiewicz P. M.
Herba Polonica
|
2013
|
tom 59
|
nr 4
Green tea (Camellia sinensis) is widely used as a popular beverage and dietary supplement that can significantly reduce the risk of many diseases. Despite the widespread use of green tea, the data regarding the safety as well as herb-drug interactions are limited. Therefore, the aim of our study was to assess the influence of standardized green tea extract (GTE) containing 61% catechins and 0.1% caffeine on the expression level of rat CYP genes and the corresponding transcription factors expression by realtime PCR. The findings showed that GTE resulted in a significant decrease of CYP2C6 expression level by 68% (p<0.001). In case of CYP3A1 and CYP3A2, the mRNA levels were also reduced by extract but in a lesser degree compared to CYP2C6. Simultaneously the significant increase in the mRNA level of CAR, RXR and GR factors was observed by 54% (p<0.05), 79% (p<0.001) and 23% (p<0.05), respectively after 10 days of green tea extract administration. In addition, there was noted a small increase of CYP1A1 expression level by 21% (p>0.05) was noted. No statistically significant differences were observed for CYP1A2 and CYP2D1/2. In the same study we observed an increase in amount of ARNT gene transcript by 27% (p<0.05) in the long-term use. However, green tea extract showed the ability to stimulate HNF-1α both after 3 and 10 days of treatment by 30% (p<0.05) and 80% (p<0.001), respectively. In contrast, no change was observed in the concentration of HNF-4α cDNA. These results suggest that GTE may change the expression of CYP enzymes, especially CYP2C6 (homologue to human CYP2C9) and may participate in clinically significant interactions with drugs metabolized by these enzymes.
9

Commodity feature and antiradical capacity of Pu Erh tea leaves available on Polish market

72%
Gramza-Michalowska A., Kulczynski B., Jankowiak J., Grden M.
Electronic Journal of Polish Agricultural Universities. Series Food Science and Technology
|
2017
|
tom 20
|
nr 2
10

The evaluation quality of black tea - based on the characteristics of hygroscopic properties designated by the static method

72%
Ruszkowska M., Dmowski P.
Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze
|
2017
|
nr 4
11

Zdrowotne oddziaływanie polifenoli zielonej herbaty (Camellia sinensis L.)

72%
Nowak A., Klimowicz A.
Kosmos
|
2013
|
tom 62
|
nr 1
12

Purification process influence on green tea extracts' polyphenol content and antioxidant activity

72%
Gramza-Michalowska A., Korczak J., Hes M.
Acta Scientiarum Polonorum. Technologia Alimentaria
|
2007
|
tom 06
|
nr 2
The research examined green tea ethanol extract, subjected to different purification processes with use of active carbon, bleaching earth, and mixture of acetone, acetic acid, water, with or without earlier hexane treatment. Purified extracts were examined according to total polyphenols content, antioxidant activity in linoleic acid emulsion and antiradical activity in DPPH• radical scavenging method. Highest polyphenol content was evaluated in the extract purified with bleaching earth, lowest however in purified with solvents mixture. Antioxidant activity of green tea extracts in linoleic acid emulsion indicated that highest antioxidative effectivity coefficient (Aec) values represented sample purified with active carbon and solvents mixture. Highest DPPH• radical scavenging activity was found in sample purified with solvents mixture, other samples however represented close activity. The present research indicated that plant extracts purification processes resulted in decrease of total polyphenols content, however without its antioxidant activity decrease
13

Changes in endogenous auxins during winter dormancy in tea [Camellia sinensis L.] O.Kuntze

72%
Nagar P. K., Sood S.
Acta Physiologiae Plantarum
|
2006
|
tom 28
|
nr 2
Changes in endogenous auxin (IAA) were determined in tea shoots with the onset of winter dormancy (30 October) and subsequent to dormancy release (15 April). Very low levels of free IAA were detected in dormant shoots when they were still in deep dormancy. The levels increased after 30 January and reached highest value after dormancy release. Conjugated IAA levels increased with onset of dormancy reaching its maximum value when free IAA levels were lowest. With increase in free IAA levels, the conj ugated IAA levels decreased in shoots prior to dormancy retease suggesttng of metabolic intert conversion of IAA during these periods. The possible roles of free and conjugated IAA in dormancy and following its release are discussed in relation to winter dormancy in tea shoots.
14

Changes in endogenous indole-3-acetic acid and some biochemical parameters during seed development in Camellia sinensis [L.] O.Kuntze

72%
Bhattacharya A., Nagar P. K., Ahuja P. S.
Acta Physiologiae Plantarum
|
2004
|
tom 26
|
nr 4
15

Krolowa chinskich herbat

72%
Zdrowa Żywność - Zdrowy Styl Życia
|
2000
|
nr 3
21-22
16

Herbata chińska. Camellia sinensis sive Thea chinensis

72%
Szopinska D.
Ekonatura
|
2005
|
nr 04
17

Zielone panaceum

72%
Calka J.
Wiedza i Życie
|
2007
|
nr 09
34-35
18

Evaluation of selected fruits extracts from Rutheacae and Punicaceae family influence on tea Camellia sinensis extracts antioxidant potential

58%
Jezierska M., Gramza-Michalowska A., Sidor A.
Polish Journal of Food and Nutrition Sciences
|
2011
|
tom 61
|
nr Suppl.1
19

The synergists action of piperonyl butoxide on toxicity of certain insecticides applied against Helopeltis theivora Waterhouse [Heteroptera: Miridae] in the Dooars tea plantations of North Bengal, India

58%
Roy S., Mukhopadhyay A., Gurusubramanian G.
Journal of Plant Protection Research
|
2009
|
tom 49
|
nr 2
225-228
Higher efficacy of mixture of insecticides with synergists piperonyl butoxide (PB) was reported in controlling in the Dooars population of Helopeltis theivora Waterhouse. Therefore, the use of synergists as one of the countermeasures against the insecticide resistance problem of H. theivora is recommended. The combination of deltamethrin +PB (piperonyl butoxide), quinalphos +PB and imidacloprid +PB showed 44.60, 16.01 and 11.14 folds increase of toxicity (synergistic ratio) than the respective insecticide alone. Piperonyl butoxide acted as an oxidase inhibitor. The addition of PB to some extent suppressed the resistance of H. theivora to these insecticides, suggesting that the P450 enzyme complex may be involved in the mechanism of toxicity.
20

Zielona herbata i jej sekrety

58%
Broda M., Leja K.
Ekonatura
|
2009
|
nr 12
6-7
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.