scholarly journals Antioxidant Activities, Total Phenolics and Flavonoids Content in Two Varieties of Malaysia Young Ginger (Zingiber officinale Roscoe)

Molecules ◽  
2010 ◽  
Vol 15 (6) ◽  
pp. 4324-4333 ◽  
Author(s):  
Ali Ghasemzadeh ◽  
Hawa Z. E. Jaafar ◽  
Asmah Rahmat
2010 ◽  
Vol 11 (10) ◽  
pp. 3885-3897 ◽  
Author(s):  
Ali Ghasemzadeh ◽  
Hawa Z. E. Jaafar ◽  
Asmah Rahmat ◽  
Puteri Edaroyati Megat Wahab ◽  
Mohd Ridzwan Abd Halim

2013 ◽  
Vol 48 (2) ◽  
pp. 115-118 ◽  
Author(s):  
NA Sattar ◽  
F Hussain ◽  
T Iqbal

Ginger (Zingiber officinale Roscoe) and Lachii (Alpinia allughas Roscoe) are well known and widely used herbs. Ethanol, acetone, methanol and n-hexane extracts of Zingiber officinale Roscoe and Alpinia allughas Roscoe roots were screened for their antioxidant activities in an effort to compare and validate the medicinal potential of their subterranean part. Total phenol (mg gallic acid/g dry matter) and flavonoid contents (catechin equivalents/g dry matter) were estimated by Folin-Ciocalteu and aluminium chloride colorimetric tests respectively. Radical scavenging activity by DPPH methods was expressed as percent inhibition. Total phenolic contents varied from 10 ± 0.12 to 14 ± 0.03 mg gallic acid/g for Z. officinale and 5.46 ± 0.02 to 12.9 ± 0.06 mg gallic acid/g for A. allughas. Total flavonoids were 5.33 ± 0.75 to 8.34 ± 2.1 mg catechin/g for Zingiber officinale and 1.50 ± 0.447 to 9.92 ± 2.5 mg catechin/g for Alpinia allughas in four solvents. Maximum phenolic and flavonoid contents were observed in methanol extracts. The antioxidant activity (percent inhibition) of Zingiber officinale and Alpinia allughas ranged from 26.8 to 68.3 and 14.3 to 58.5 respectively in different solvents. Overall, the findings indicate that the both spices are good sources of phytochemicals which could be exploited as great potentials for drugs and/or nutritional supplements. Bangladesh J. Sci. Ind. Res. 48(2), 115-118, 2013 DOI: http://dx.doi.org/10.3329/bjsir.v48i2.15742


Author(s):  
Mahmoud Osanloo ◽  
Ali Ghanbariasad ◽  
Ali Taghinezhad

Since synthetic chemotherapeutic drugs produce a certain degree of drug resistance and due to their common side effects, such as damage to hematopoietic cells and hair loss, it is necessary to use herbal medicine as a substrate to develop new anticancer drugs. The ingredients of three essential oils (EO) were identified using gas chromatography–mass spectrometry (GC-MS) analysis. Their anticancer activities have been investigated on four human breast cancer cell lines, including MCF-7, MDA-MB-175, MDA-MB-231, and MDA-MB-468. In addition, their antioxidant activity was evaluated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The three plants were investigated for identifications of the ingredients of their EOs, and major ingredients were identified in each plant as alpha-phellandrene (26.75 %) in Anethum graveolens L., limonene (61.83 %) in Citrus limon (L.) Osbeck, and zingiberene (30.28 %) in Zingiber officinale Roscoe. Among the EOs, C. limon was significantly more effective than others; its half-maximal inhibitory concentration (IC50) on MCF-7 was obtained at 201 µg.mL-1. Furthermore, Z. officinale EO showed a higher antioxidant activities in comparison to the two other EOs. Considering the antioxidant and anticancer effects of the EOs, they could be further investigated as a possible complementary medicine in cancer.


Author(s):  
Эльвира Алексеевна Алексеева ◽  
О. Г. Димитров ◽  
Л. Н. Шантанова ◽  
С. М. Николаев ◽  
Е. Н. Карева ◽  
...  

Изучены адаптогенные свойства растительного средства «Кардекаим», представляющего собой сухой экстракт из сырья Inula helenium L., Zingiber officinale Roscoe, Elletaria cardamomum (L.) Maton., Caragana spinosa (L.) Wall. ex Hornem. и содержащего в качестве действующих веществ фенольные соединения и терпеноиды. Курсовое превентивное введение кардекаима в дозе 100 мг/кг в течение 7 дней перед острым эмоциональным стрессом оказывает выраженное стресс-протективное действие, препятствуя развитию признаков «триады Селье»: инволюции вилочковой железы (40 %), язвенным повреждениям слизистой оболочки желудка (в 5 раз) и в меньшей степени — гипертрофии надпочечников (p ≤ 0,05), полученный эффект не уступает препарату сравнения — экстракту элеутерококка. Показано, что повышение резистентности к стрессу под влиянием кардекаима сопровождается активацией синтеза белков теплового шока (Hsp-70), не связанной со стресс-индуцированной генерацией NO.


2010 ◽  
Vol 6 (1) ◽  
pp. 36
Author(s):  
Silvana Dinaintang Harikedua

The objective of this study was to investigate the effect of ginger extract addition and refrigerate storage on sensory quality of Tuna through panelist’s perception. Panelists (n=30) evaluated samples for overall appearance and flavor attribute using hedonic scale 1–7. The sample which is more acceptable by panelists on flavor attributes having 3% gingers extract and storage for 3 days. The less acceptable sample on flavor attribute having 0% ginger extract and storage for 9 days. On the other hand, the sample which is more acceptable by panelists on overall appearance having 0% ginger extract without storage treatment. The less acceptable sample on overall appearance having 3% ginger extract and storage for 9 days.


2018 ◽  
Vol 69 (8) ◽  
pp. 1927-1933 ◽  
Author(s):  
Mariana Deleanu ◽  
Elisabeta E. Popa ◽  
Mona E. Popa

The compounds in Ginger (Zingiber officinale-Roscoe) essential oil provenience China and wild oregano (Origanum vulgare) essential oil of Romanian origin were identified by GC/MS and their antioxidant and antifungal properties were evaluated. Wild oregano oil was characterized by high content of oxygenated monoterpenes hydrocarbons (84.05%) of which carvacrol was the most abundant (73.85%) followed by b-linalool (3.46%) and thymol (2.29%). Ginger oil had a higher content of sesquiterpene hydrocarbons including zingiberene (31.47%), b-sesquiphellandrene (13.76%), a-curcumene (10.41%), a-farnesene (8.31%) and b-bisabolene (7.55%) but a lower content of oxygenated monoterpenes (7.97%). The high content of oxygenated monoterpens of wild oregano oil is in accordance with total content of polyphenols determined by the Folin�Ciocalteu method (6.71�0.73 mg of gallic acid equivalent per g oil). Ginger oil had only 1.34�0.22 mg gallic acid equivalent per g oil. Wild oregano oils exhibited appreciable in vitro antioxidant activity as assessed by 2, 2`-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging and 2,2�-azino-bis (3 ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS). The sample concentration required to scavenge 50% of the DPPH free radicals was 0.76�0.13 mg/mL for wild oregano oil compared to 20.22�2.12 mg/mL for ginger oil. Also, wild oregano oils showed significant inhibitory activity against selected pathogenic fungi (Fusarium oxysporum, Aspergillus flavus and Penicillium expansum). 1�L of oregano oil is sufficient for almost 75% growth inhibition of Aspergillus flavus compared to ginger oil which shows antifungal activity at 240�L for 78% growth inhibition. It can be concluded that wild oregano oil could be used as food preservative in some food products in which Fusarium oxysporum, Aspergillus flavus and Penicillium expansum could grow and have potential to produce health hazards mycotoxines.


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