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Obiajunwa, E.I.; Adebajo, AC; Omobuwajo, O.R.

doi:10.1023/a:1015838300859

Cited by 93 publications

(22 citation statements)

References 4 publications

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“…The Ni concentration in Ethiopian ginger is lower than the Ni content determined in Nigeria (Obiajunwa et al 2002). The Ni content in Ethiopian ginger is higher than the permissible limit set by FAO/WHO in edible plants (1.63 mg/kg).…”

Section: Discussionmentioning

confidence: 64%

“…Mn concentration in Ethiopian ginger is in the range of 184–401 mg/kg and its values reported by Devi et al (2008) and Obiajunwa et al (2002) lies in this range. The Fe content reported in Saudi Arabia (Alwakeel 2008) is less than the Fe content in Ethiopian ginger.…”

Section: Discussionmentioning

confidence: 76%

“…Some studies have also been conducted on determination of essential and non-essential metal levels of ginger in Nigeria (Obiajunwa et al 2002; Ogunwandea and Olawore 2004; Aiwonegbe and Ikhuoria 2007), India (Devi et al 2008), and Saudi Arabia (Al-Eed et al 2002; Alwakeel 2008). However, the literature survey revealed that there is no study conducted on the determination of metals in ginger cultivated in Ethiopia.…”

Section: Introductionmentioning

confidence: 99%

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Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Wagesho

Chandravanshi

2015

SpringerPlus

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BackgroundGinger (Zingiber officinale Roscoe) is a common condiment for various foods and beverages and widely used worldwide as a spice. Its extracts are used extensively in the food, beverage, and confectionary industries in the production of products such as marmalade, pickles, chutney, ginger beer, ginger wine, liquors, biscuits, and other bakery products. In Ethiopia, it is among the important spices used in every kitchen to flavor stew, tea, bread and local alcoholic drinks. It is also chiefly used medicinally for indigestion, stomachache, malaria, fevers, common cold, and motion sickness. The literature survey revealed that there is no study conducted on the determination of metals in ginger cultivated in Ethiopia. Hence it is worthwhile to determine the levels of essential and non-essential metals in ginger cultivated in Ethiopia.MethodsThe levels of essential (Ca, Mg, Fe, Zn, Cu, Co, Cr, Mn, and Ni) and non-essential (Cd and Pb) metals in ginger (Zingiber officinale Roscoe) cultivated in four different regions of Ethiopia and the soil where it was grown were determined by flame atomic absorption spectrometry. 0.5 g of oven dried ginger and soil samples were digested using 3 mL of HNO3 and 1 mL of HClO4 at 210°C for 3 h and a mixture of 6 mL aqua-regia and 1.5 mL H2O2 at 270°C for 3 h, respectively.ResultsThe mean metal concentration (μg/g dry weight basis) ranged in the ginger and soil samples, respectively, were: Ca (2000–2540, 1770–3580), Mg (2700–4090, 1460–2440), Fe (41.8–89.0, 21700–46900), Zn (38.5–55.2, 255–412), Cu (1.1–4.8, 3.80–33.9), Co (2.0–7.6, 48.5–159), Cr (6.0–10.8, 110–163), Mn (184–401, 1760–6470), Ni (5.6–8.4, 14.1–79.3) and Cd (0.38–0.97, 0.24–1.1). The toxic metal Pb was not detected in both the ginger and soil samples.ConclusionThere was good correlation between some metals in ginger and soil samples while poor correlation between other metals (Fe, Ni, Cu). This study revealed that Ethiopian gingers are good source of essential metals and free from toxic metal Pb while containing negligible amount of Cd.

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Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

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Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Wagesho

Chandravanshi

2015

SpringerPlus

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“…Obiajunwa et al [19] and Fakankun et al [20] determined essential and trace element contents of some Nigerian medicinal plants. Serfor-Armah et al [21] determined concentrations of seventeen elements (Al, Ba, Br, Ca, Cl, Co, K, Mn, Mg, Na, Rb, Sb, Sc, Se, Ta, V and Zn) in five medicinal plants used in Ghana.…”

Section: Introductionmentioning

confidence: 99%

Analysis of essential elements in Pragya-peya—a herbal drink and its constituents by neutron activation

Kumar

Näir

Reddy

et al. 2005

Journal of Pharmaceutical and Biomedical Analysis

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“…Numerous studies concerning heavy metal levels in medicinal plants were carried out in Algeria [9], Austria [10,11], Bulgaria [12], China [13][14][15][16][17], Malaysia [18], Nigeria [19], Poland [20][21][22], Serbia [23] and Turkey [24,25]. The metal content in herbal material is mainly analysed using atomic absorption spectroscopy (AAS) or ion chromatography.…”

Section: Introductionmentioning

confidence: 99%

A preliminary study on the effect of mineralization parameters on determination of metals in Viscum album species

et al. 2010

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An increasing interest in determination of various macro-and microelements in medicinal plants has been observed. The majority of studies are carried out using one mineralization method without any optimization. The present study demonstrates that changes in mineralization parameters can significantly affect the recovery of the elements determined. In the study, the dried plant material was mineralized in 12 ways and iron (Fe), copper (Cu), zinc (Zn), nickel (Ni) and manganese (Mn) levels were determined. The samples were mineralized in the dry or open microwave mode as well as 10 closed microwave modes. The influence of acid amounts, irradiation power and time, addition of hydrogen peroxide and perfluoric acid was examined. All parameters were shown to be critical -good efficiency was observed with larger amounts of acid. The determined content varied significantly in the same sample and were in the ranges (ug g

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Untitled

Cited by 93 publications

References 4 publications

Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Analysis of essential elements in Pragya-peya—a herbal drink and its constituents by neutron activation

A preliminary study on the effect of mineralization parameters on determination of metals in Viscum album species

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