Black garlic fermentation with green tea extract reduced HMF and improved bioactive properties: optimization study with response surface methodology

2022 ◽  
Author(s):  
Tugba Dursun Capar ◽  
Cansu Inanir ◽  
Firdevs Cimen ◽  
Lutfiye Ekici ◽  
Hasan Yalcin
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Green Tea ◽  
Green Tea Extract ◽  
Bioactive Properties ◽  
Optimization Study ◽  
Tea Extract

scholarly journals Physicochemical and Active Properties of Gelatine-Based Composite Gels Loaded with Lysozyme and Green Tea Polyphenols

2021 ◽  
Vol 59 (3) ◽  
Author(s):  
Derya Boyacı ◽  
Pelin Barış Kavur ◽  
Şükrü Gulec ◽  
Ahmet Yemenicioğlu
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Green Tea ◽  
Green Tea Extract ◽  
Green Tea Polyphenols ◽  
Angiotensin Converting Enzyme Inhibition ◽  
Composite Gels ◽  
Bioactive Properties ◽  
Tea Extract ◽  
Release Profiles

Research background. The use of gel-based systems, as a novel method for the delivery of natural antimicrobial, antioxidant, and bioactive compounds is a developing innovative solution for the food industry. This research aimed development of multifunctional active edible gels based on gelatine and its composites with improved mechanical properties. Experimental approach. Antilisterial and bioactive composite gels showing different physical and active properties than classical gelatine gel were developed by loading lysozyme and green tea extract into gelatine/starch and gelatine/wax composite gels. The gels were characterized for their mechanical properties, swelling profiles, colour, release profiles, and antimicrobial and bioactive properties. Results and conclusions. Gelatine/wax gels showed 1.3 to 2.1-fold higher firmness and cutting strength than gelatine and gelatine/starch composite gels that had similar firmness and cutting strengths. Work to shear of both composite gels was 1.4 to 1.9-fold higher than that of gelatine gel. The gelatine/starch gel showed the highest water absorption capacity. Green tea extract reduced soluble lysozyme in gels, but composite gels contained higher soluble lysozyme than gelatine gel. All the gels with lysozyme inhibited Listeria innocua growth in the broth media while green tea extract showed antilisterial activity only in gelatine/wax gels. Gels with green tea extract showed antioxidant, antidiabetic (α-glucosidase, and α-amylase inhibition), antihypertensive (angiotensin-converting enzyme inhibition), and antiproliferative activities (on Caco-2 human colon carcinoma cells). However, gelatine and gelatine/wax gels showed the highest antioxidant and antidiabetic activity. The gelatine/wax gels prevented phenolic browning while green tea extract in other gels showed moderate or extensive browning. Novelty and scientific contribution. This work clearly showed the possibility of improving mechanical properties, and modifying water absorption and controlled release profiles of gelatine gels using gelatine/starch and gelatine/wax composites. The novel composite gels reduced browning of incorporated polyphenols and showed antilisterial and bioactive properties.

Green Tea Extract Exposure Pattern Differenzially Affects Acetaminophen-Induced Hepatotoxicity

Planta Medica ◽  
2011 ◽  
Vol 77 (05) ◽  
Author(s):  
A Ali ◽  
X Yang ◽  
Q Shi ◽  
J Greenhaw ◽  
WF Salminen
Keyword(s):  
Green Tea ◽  
Green Tea Extract ◽  
Exposure Pattern ◽  
Tea Extract

Antioxidative Activity of Laver Snack Prepared with Addition of Green Tea Extract

2017 ◽  
Vol 23 (4) ◽  
pp. 35-41
Author(s):  
Jeong Hee Park ◽  
Hang Yeon Jeong ◽  
Jeong Yong Cho ◽  
Jae Hak Moon
Keyword(s):  
Green Tea ◽  
Antioxidative Activity ◽  
Green Tea Extract ◽  
Tea Extract

N-hexane Extract and Fraction of Green Tea as Antiproliferation of MCM-B2 Breast Cancer Cells In Vitro

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Lisni Noraida Waruwu ◽  
Maria Bintang ◽  
Bambang Pontjo Priosoeryanto
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Green Tea ◽  
Cancer Cell ◽  
Breast Cancer Cells ◽  
Green Tea Extract ◽  
Hexane Fraction ◽  
Phytochemical Screening ◽  
Tea Extract

Green tea (Camellia sinensis) is one of traditional plants that have the potential as an anticancer. The sample used in this research commercial green tea extract. The purpose of this study was to test the antiproliferation activity of green tea extract on breast cancer cell MCM-B2 in vitro. Green tea extract fractionated using three solvents, ie water, ethanol 70%, and n-hexane. Extract and fraction of green tea water have value Lethality Concentration 50 (LC50) more than 1000 ppm. The fraction of ethanol 70% and n-hexane had an LC50 value of 883.48 ppm and 600.56 ppm, respectively. The results of the phytochemical screening of green tea extract are flavonoids, tannins, and saponins, while the phytochemical screening results of n-hexane fraction are flavonoids and tannins. Antiproliferation activity was tested on breast cancer cells MCM-B2 and normal cells Vero by trypan blue staining method. The highest MCM-B2 cell inhibitory activity was achieved at a concentration of 13000 ppm green tea extract and 1000 ppm of n-hexane fraction, 59% and 59%, respectively. The extract and n-hexane fraction of green tea are not toxic to normal Vero cells characterized by not inhibiting normal cell proliferation. Keywords: antiproliferative, cancer cell MCM-B2, commercial green tea, cytotoxicity

Protective effect of green tea extract against cadmium-induced testicular damage in rats in respect of oxidant/antioxidant equilibrium and androgen production

2020 ◽  
Vol 21 (1) ◽  
pp. 31-35
Author(s):  
Basma El-Desoky ◽  
Shaimaa El-Sayed ◽  
El-Said El-Said
Keyword(s):  
Gene Expression ◽  
Single Dose ◽  
Green Tea ◽  
Serum Testosterone ◽  
Green Tea Extract ◽  
Male Rats ◽  
Controlled Study ◽  
Control Group ◽  
Testicular Damage ◽  
Tea Extract

Objective: Investigating the effect of green tea extract (GTE) on the testicular damage induced by cadmium chloride CdCl2 in male rats. Design: Randomized controlled study. Animals: 40 male Wistar rats. Procedures: Rats were randomly divided into four groups: A) control group (each rat daily received pellet diet); B) GTE group each rat daily received pellet diet as well as 3 ml of 1.5 % w/v GTE, C) CdCl2 group each rat was I/P injected a single dose of 1 mg/kg CdCl2, then daily received pellet diet, and D) CdCl2+GTE group each rat was I/P injected a single dose of 1 mg/kg CdCl2 then daily received pellet diet as well as 3 ml of 1.5 % w/v GTE. After 30 days, blood samples were collected for hormonal assays (testosterone, FSH, and LH). In addition, both testes were collected; one of them was used for quantification of 17-beta hydroxysteroid dehydrogenase III (17β-HSDIII) gene expression using a real-time PCR. The other testis was used for determination of catalase and reduced glutathione; GSH, Nitric oxide (NO) and malondialdehyde (MDA) levels. Results: CdCl2 decreased serum testosterone levels and its synthesis pathway (17β-HSDIII testicular gene expression). While antioxidants catalase and GSH were reduced, oxidants MDA were enriched in the testes of CdCl2-poisoned rats. This CdCl2-promoted testicular dysfunction was corrected via the administration of GTE to male rats. Conclusion and clinical relevance: GTE could be used as a remedy for protecting against CdCl2-induced testicular damage in male rats.

Effects of Green Tea Extract on Acute Ethanol-induced Hepatotoxicity in Rats

2010 ◽  
Vol 39 (3) ◽  
pp. 343-349 ◽  
Author(s):  
Dong-Chun Jin ◽  
Seung-Wook Jeong ◽  
Pyoung-Sim Park
Keyword(s):  
Green Tea ◽  
Green Tea Extract ◽  
Acute Ethanol ◽  
Tea Extract
Sign in / Sign up

Export Citation Format

Share Document