Pollen Analysis of Natural Honeys from the Central Region of Shanxi, North China

Song, Xingyu; Yao, Yi‐Feng; Yang, Wude

doi:10.1371/journal.pone.0049545

Cited by 54 publications

(37 citation statements)

References 12 publications

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“…Melissopalynology (pollen analysis) is the traditional method used to determine the botanical origin of honeys [13,14], but this technique has some limitations [15]. In fact, melissopalynology requires relevant knowledge of pollen morphology and specialised professional personnel to achieve reliable results [13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Argentine honeys on the basis of their mineral content and some typical quality parameters

Conti

Finoia

Fontana

et al. 2014

Chemistry Central Journal

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BackgroundThe levels of 19 elements (As, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Tl, U, V, Zn) from sixteen different Argentine production sites of unifloral [eucalyptus (Eucaliptus rostrata), chilca (Baccharis salicifolia), Algarrobo (Prosopis sp.), mistol (Ziziphus mistol) and citric] and multifloral honeys were measured with the aim to test the quality of the selected samples. Typical quality parameters of honeys were also determined (pH, sugar content, moisture). Mineral elements were determined by using inductively coupled plasma mass spectrometer (ICP-MS DRC). We also evaluated the suitability of honey as a possible biomonitor of environmental pollution. Thus, the sites were classified through cluster analysis (CA) and then pattern recognition methods such as Principal Component Analysis (PCA) and discriminant analysis (DA) were applied.ResultsMean values for quality parameters were: pH, 4.12 and 3.81; sugar 82.1 and 82.0 °brix; moisture, 16.90 and 17.00% for unifloral and multifloral honeys respectively. The water content showed good maturity. Likewise, the other parameters confirmed the good quality of the honeys analysed. Potassium was quantitatively the most abundant metal, accounting for 92,5% of the total metal contents with an average concentration of 832.0 and 816.2 μg g-1 for unifloral and multifloral honeys respectively. Sodium was the second most abundant major metal in honeys with a mean value of 32.16 and 33.19 μg g-1 for unifloral and multifloral honeys respectively. Mg, Ca, Fe, Mn, Zn and Cu were present at low-intermediate concentrations. For the other 11 trace elements determined in this study (As, Be, Cd, Co, Cr, Ni, Pb, Se, Tl, U and V), the mean concentrations were very low or below of the LODs. The sites were classified through CA by using elements’ and physicochemical parameters data, then DA on the PCA factors was applied. Dendrograms identified three main groups. PCA explained 52.03% of the total variability with the first two factors.ConclusionsIn general, there are no evidences of pollution for the analysed honeys. The analytical results obtained for the Argentine honeys indicate the products’ high quality. In fact, most of the toxic elements were below LODs. The chemometric analysis combining CA, DA and PCA showed their aptness as useful tools for honey’s classification. Eventually, this study confirms that the use of honey as biomonitor of environmental contamination is not reliable for sites with low levels of contamination.

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Section: Introductionmentioning

confidence: 99%

Characterization of Argentine honeys on the basis of their mineral content and some typical quality parameters

Conti

Finoia

Fontana

et al. 2014

Chemistry Central Journal

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“…However, as observed rarely in angiosperms, following tetrad formation, callose envelope that surrounds the tetrads disappeared but microspores remained within the pollen mother cells cellulosic wall and failed to separate each other leading to the formation of compound pollen grains. The simultaneous cytokinesis and the formation of the tetrahedral and isobilateral tetrads, and compound pollen grains have also been reported in other species of the genus Catalpa including C. bungei (Fan et al 2011), C. speciosa (Chen et al 2014) and C. ovata (Ruwen 1981, Song et al 2012.…”

Section: Pollen Developmentmentioning

confidence: 68%

AN OVERVIEW OF POLLEN AND ANTHER WALL DEVELOPMENT IN Catalpa bignonioides WALTER (BIGNONIACEAE)

Konyar¹

2017

Trakya University Journal of Natural Sciences

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Anther development in Catalpa bignonioides Walter was investigated from the sporogenous cell to the mature pollen grain stages to determine whether the pollen and anther wall development follows the basic scheme in angiosperms. In order to follow pollen ontogeny through successive stages of pollen development, anthers at different developmental stages were embedded in epon according to the usual method, and semi-thin sections, taken from the epon embedded anthers, were stained with toluidine blue for general histological observations under light microscopy. The young anther wall of C. bignonioides consists of four layers; from the exterior, the epidermis, endothecium, middle layer, and a secretory tapetum. The tapetum is dual in origin and dimorphic. Ubisch bodies were observed on the inner tangential walls of the tapetal cells. The number of the anther wall layers changes depending on the developmental stage and region of the anther. In contrast to the other anther wall layers, epidermis and endothecium layers remain intact until anthesis. Endothecial cells enlarge and develop thickenings at maturity. During microspore development, meiocytes undergo meiosis and simultaneous cytokinesis leading to the formation of permanent tetrahedral, isobilateral and rarely linear tetrads. Pollen tetrads are shed from the anther as compound pollen grains. Results of the study revealed that pollen and anther wall development in C. bignonioides follows the basic scheme in angiosperms.Özet: Catalpa bignonioides Walter'deki anter çeperi ve polen gelişiminin diğer angiospermlerdeki temel aşamaları takip edip etmediğini anlayabilmek için, bu bitkideki anter gelişimi sporogen evre aşamasından olgun polen aşamasına kadar ışık mikroskobu kullanılarak araştırıldı. Anterdeki polen ontogenezini sırasıyla takip edebilmek için farklı gelişim aşamalarındaki anterler epona gömüldü ve bu anterlerden ultramikrotom ile alınan 1 mikronluk kesitler genel histokimyasal gözlemler için toluidin mavisiyle boyandı. Catalpa bignonioides'in genç anter çeperi dıştan içe doğru sırasıyla epidermis, endotesyum, ara tabaka ve salgı tapetumu olmak üzere 4 farklı tabakadan oluşmaktadır. Tapetum hücreleri iki farklı kökenden gelir ve yapısal olarak dimorfiktir. Tapetum hücrelerinin dış çeperlerinde, Ubisch cisimcikleri gözlenmiştir. Anter çeperindeki tabaka sayısı anterin gelişim aşamalarına ve değişik bölgelerine göre farklılık göstermektedir. Epidermis ve endotesyum tabakaları, anter çeperinin diğer tabakalarından farklı olarak, anter açılmasına kadar bütünlüğünü korumaktadır. Endotesyum hücreleri olgun polen aşamasında genişler ve çeper kalınlaşmaları gösterir. Mikrospor gelişimi sırasında mayoz bölünme geçiren hücreler simultane tip sitokinez ile tedrahedral, izobilateral ve nadir olarak da linear tipte kalıcı tetratları oluşturur. Polenler anterden tetrat halinde dışarı atılır. Bu çalışmanın bulguları C. bignonioides'teki anter çeperi ve polen gelişiminin diğer angiospermlerle uyumlu olduğunu göstermiştir.Anahtar kelimeler: Anter çeperi, Mikrospor gelişimi,...

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“…The months of March to May are equally important but perhaps represent secondary periods; these months constitute bee foraging period in southern Europe (Furness, 1994). Similarly, two seasons each of honey production (March-May and October-Nov) were indicated in Indian honeys (Tiwari et al, 2012) and those of April and July-Sept for Chinese honeys (Song et al, 2012). In Nigeria, Agwu and Akanbi, 1985) found that the production season of honey is from September-April.…”

Section: Pollen Counts and Variety Of Pollen Typesmentioning

confidence: 97%

Comparative pollen analysis of honeys from apiary and open markets in Nigeria and Bénin Republic

Orijemie¹

2017

Ife Journal of Science

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There have been doubts as to the authenticity of honeys purchased in the open markets mainly due to sharp practices of vendors. Hence, pollen analysis was carried out on honeys from open markets and those from an apiary to ascertain the veracity of the claims. Eleven honey samples, six from the apiary and five from the open markets, were analysed for their pollen content. Pollen types and number in the apiary honeys varied between 7 and 13 and 57 and 64,000 respectively; the most dominant pollen types being those of Elaeis guineensis and herbaceous plants. Pollen types in the open market honeys on the other hand varied between 11 and 48 while counts varied between 626 and 241,623, and were dominated by pollen of Guinea savanna plants. Pollen assemblages in the apiary honeys reflected the surrounding vegetation of the apiary which was secondary forest as well as its production season. In contrast, pollen assemblages of all the open market honeys revealed their sources as being Guinea savanna zone. This however, indicates the vegetation of the producing locality of only one of the honeys and also contradicts the claim of a rainforest source for the others. Results from this study underscore the significance of melissopalynology in ascertaining sources of honeys, and highlight the importance of the Guinea savanna in beekeeping and honey production.

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Pollen Analysis of Natural Honeys from the Central Region of Shanxi, North China

Cited by 54 publications

References 12 publications

Characterization of Argentine honeys on the basis of their mineral content and some typical quality parameters

Characterization of Argentine honeys on the basis of their mineral content and some typical quality parameters

AN OVERVIEW OF POLLEN AND ANTHER WALL DEVELOPMENT IN Catalpa bignonioides WALTER (BIGNONIACEAE)

Comparative pollen analysis of honeys from apiary and open markets in Nigeria and Bénin Republic

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