Quality Evaluation of Light- and Dark-Colored Hungarian Honeys, Focusing on Botanical Origin, Antioxidant Capacity and Mineral Content

Melissopalynology, antioxidant capacity and mineral and toxic element contents were analyzed in eight types of Hungarian honeys. Based on color, two groups were distinguished: light honeys comprised acacia, amorpha, phacelia and linden honeys; while dark honeys included sunflower, chestnut, fennel and sage honeys, with 100 to 300 and 700 to 1500 mAU, respectively. The unifloral origin of each sample was supported using pollen analysis. The absorbance of honey correlated positively with antioxidant capacity determined by three different methods (TRC, DPPH, ORAC), and also with mineral content. The exception was the light amber linden honey with significantly higher K content and antiradical activity than other light honeys. The Mn, Zn and Fe contents were the highest in chestnut, sunflower and fennel honeys, respectively. The black meadow sage honey performed best regarding the content of other elements and antioxidant activity. The concentrations of several toxic elements were below the detection limit in the samples, indicating their good quality. The principal component analysis (PCA) revealed correlations between different antioxidant assays and minerals, and furthermore, confirmed the botanical authentication of the honeys based on the studied parameters. To our best knowledge, the present study is the first to provide a complex analysis of quality parameters of eight unifloral Hungarian honeys.

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Quality Assessment of Goldenrod, Milkweed and Multifloral Honeys Based on Botanical Origin, Antioxidant Capacity and Mineral Content

International Journal of Molecular Sciences ◽

10.3390/ijms23020769 ◽

2022 ◽

Vol 23 (2) ◽

pp. 769

Author(s):

Marianna Kocsis ◽

Alexandra Bodó ◽

Tamás Kőszegi ◽

Rita Csepregi ◽

Rita Filep ◽

...

Keyword(s):

Antioxidant Capacity ◽

Mineral Content ◽

Principal Component ◽

Pollen Spectrum ◽

Botanical Origin ◽

Multivariate Statistical ◽

Zn Content ◽

Five Elements ◽

Multifloral Honey ◽

Melissopalynological Analysis

The goal of the study was to evaluate the pollen spectrum, antioxidant capacity and mineral content of four Hungarian honey types, using multivariate statistical analysis. The light colored honeys were represented by milkweed honey and a multifloral (MF) honey with dominant pollen frequency of linden (MF-Tilia); the darker ones were goldenrod honey and a multifloral honey with Lamiaceae pollen majority (MF-Lamiaceae). The pollen spectrum of the samples was established with melissopalynological analysis. The absorbance of the honeys positively correlated with the antioxidant capacity determined with three of the used methods (TRC, TEAC, DPPH), but not with ORAC. The latter method correlated negatively also with other antioxidant methods and with most of the mineral values. MF-Tilia had high ORAC value, K and Na content. The MF-Lamiaceae had the highest K, Mg, P, S, Cu and Zn content, the last five elements showing strict correlation with the TRC method. The darker goldenrod honey had higher SET values and total mineral content, than the milkweed honey. The above character-sets facilitate identification of each honey type and serve as indicators of variety. The antioxidant levels and mineral content of honeys allowed their clear separation by principal component analysis (PCA).

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Influence of Pasteurization on Total Phenols Content and Antioxidant Capacity of Prunus persica L. Juices

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha45210699 ◽

2017 ◽

Vol 45 (2) ◽

pp. 553-560 ◽

Cited By ~ 1

Author(s):

Vasile LASLO ◽

Alin C. TEUSDEA ◽

Sonia A. SOCACI ◽

Daniel MIERLITA ◽

Simona I. VICAS

Keyword(s):

Antioxidant Capacity ◽

Prunus Persica ◽

Principal Component ◽

Hierarchical Cluster ◽

Quality Parameters ◽

Point Of View ◽

Total Phenolic ◽

Total Phenols ◽

The European Union ◽

Important Place

Peach and nectarine (Prunus persica ) production has an important place in the world, being the most important fruit after apple crops in the European Union. Because the fruits are perishable, it is desirable to valorize them as juice. Seven peaches and three nectarines cultivars grown in the N-W part of Romania were investigated for quality parameters, volatile profile, total phenols content and antioxidant capacity. The volatile composition of peach and nectarine cultivars was determined via the ITEX/GC-MS technique, the main volatile compounds belonging to alcohols and aldehydes. Another objective was to obtain the pasteurised juices from these fruits and to investigate the best time of pasteurisation in order to identify the most valuable cultivar from the perspective of total phenols content and its antioxidant capacity. For a better interpretation of results and a proper discrimination between cultivars, according to the total phenols content and antioxidant capacity, the multivariate analysis, Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) were applied. The peach cultivars showed the highest content in total phenols compared with nectarine. From peach cultivars, the highest concentration was recorded in ‘Southland’ (47.49 ± 0.14 mg GAE 100 g-1 FW) and from nectarine cultivars in ‘Romamer’ (16.28 ± 0.83 mg GAE 100 g-1 FW). The highest antioxidant capacities were recorded in ‘Southland’ peach in the case of both methods (DPPH and FRAP). The results showed that ‘Southland’ peach and ‘Romamer’ nectarine pasteurised juices are the best from the point of view of total phenolic compounds content with high antioxidant capacity.

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Quality Evaluation of Strawberries Packed with Perforated Film

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.200.451 ◽

2012 ◽

Vol 200 ◽

pp. 451-454

Author(s):

Zu Ju Shu ◽

Sheng Quan Liu ◽

Yan Yuan ◽

Ye Bao Xia

Keyword(s):

Carbon Dioxide ◽

Quality Evaluation ◽

Carbon Dioxide Concentration ◽

Principal Component ◽

Quality Parameters ◽

Low Oxygen ◽

High Carbon ◽

Perforated Film ◽

High Carbon Dioxide

Strawberries were stored in perforated film packages with different number and diameter of perforation for 5 days at 18°C simulating the ordinary logistics in Hefei. The non-perforated film packages were used as the control. Several quality parameters of strawberries were determined and analyzed everyday during storage. The principal component analysis was applied to the comprehensive assessment of strawberry quality. The results showed that suitable diameter and number of perforation could maintain strawberry quality. The comprehensive quality of strawberries packed in perforated film with 36 perforations of diameter 0.5mm was the best, followed by the ones packed in non-perforated film with internal atmosphere of low oxygen and high carbon dioxide concentration.

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A Complex Analysis Employing ARIMA Model and Statistical Methods on Air Pollutants Recorded in Ploiesti, Romania

Revista de Chimie ◽

10.37358/rc.17.4.5559 ◽

2017 ◽

Vol 68 (4) ◽

pp. 818-823 ◽

Cited By ~ 1

Author(s):

Alin Pohoata ◽

Emil Lungu

Keyword(s):

Air Pollution ◽

Air Quality ◽

Statistical Methods ◽

Air Pollutants ◽

Complex Analysis ◽

Moving Average ◽

Arima Model ◽

Principal Component ◽

Quality Parameters ◽

Quality Data

Air pollution is an everyday issue, very relevant to public authorities, requiring control and monitoring to provide data for decision-making policies. The objective of this study was to evaluate the air quality in Ploiesti city, Romania and to observe the advantages and limitations of the some statistical methods used in forecasting air quality. Data for six air quality parameters collected at monitoring stations in Ploiesti during the 2013 year were statistically analyzed. Principal component analysis (PCA) was used to provide a relevant description in factors that can be explained in terms of different sources of air pollution. The measured pollutants data were statistically analyzed using the auto-regressive integrated moving average (ARIMA) method in order to assess the efficiency of using this method in forecasting the environmental air quality. The results revealed that ARIMA method has some limitations and do not produce satisfactory results for certain air pollutants such as PM10 and CO, even the forecasted period is short. By comparison, the ARIMA model obtained for NOx , NO2 , or O3 time series, provides good results, with relative errors around 5%.

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Quality evaluation of tugaksheeree samples by ATR-FTIR spectroscopy using multicomponent analysis

The Natural Products Journal ◽

10.2174/2210315510999200408125555 ◽

2020 ◽

Vol 10 ◽

Cited By ~ 1

Author(s):

Nikunj D. Patel ◽

Niranjan S. Kanaki

Keyword(s):

Principal Component Analysis ◽

Cluster Analysis ◽

Quality Evaluation ◽

Principal Component ◽

Hierarchical Cluster ◽

Attenuated Total Reflectance ◽

Chemometric Methods ◽

Total Reflectance ◽

Fingerprint Region ◽

Ftir Technique

Background: Numerous Ayurvedic formulations contains tugaksheeree as key ingredient. Tugaksheereeis the starch gained from the rhizomes of two plants, Curcuma angustifoliaRoxb. (Zingiberaceae) and Marantaarundinacea (MA) Linn. (Marantaceae). Objective: The primary concerns in quality assessment of Tugaksheeree occur due to adulteration or substitution. Method: In current study, Fourier transform infrared (FTIR) technique with attenuated total reflectance (ATR) facility was used to evaluate tugaksheeree samples. Total 10 different samples were studied and transmittance mode was kept to record the spectra devoid of pellets of KBR. Further treatment was given with multi component tools by considering fingerprint region of the spectra. Multivariate analysis was performed by various chemometric methods. Result: Multi component methods like Principal Component Analysis (PCA), and Hierarchical Cluster Analysis (HCA)were used to discriminate the tugaksheeree samples using Minitab software. Conclusion: This method can be used as a tool to differentiate samples of tugaksheeree from its adulterants and substitutes.

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Mayten Tree Seed Oil: Nutritional Value Evaluation According to Antioxidant Capacity and Bioactive Properties

Foods ◽

10.3390/foods10040729 ◽

2021 ◽

Vol 10 (4) ◽

pp. 729

Author(s):

Rosanna Ginocchio ◽

Eduardo Muñoz-Carvajal ◽

Patricia Velásquez ◽

Ady Giordano ◽

Gloria Montenegro ◽

...

Keyword(s):

Antioxidant Capacity ◽

Seed Oil ◽

Quality Parameters ◽

Antioxidant Compounds ◽

Native Plant ◽

Potential Health ◽

North Central ◽

Central Chile ◽

Value Evaluation ◽

Tree Seed

The Mayten tree (Maytenus boaria Mol.), a native plant of Chile that grows under environmentally limiting conditions, was historically harvested to extract an edible oil, and may represent an opportunity to expand current vegetable oil production. Seeds were collected from Mayten trees in north-central Chile, and seed oil was extracted by solvent extraction. The seed oil showed a reddish coloration, with quality parameters similar to those of other vegetable oils. The fatty acid composition revealed high levels of monounsaturated and polyunsaturated fatty acids. Oleic and linoleic acids, which are relevant to the human diet, were well represented in the extracted Mayten tree seed oil. The oil displayed an antioxidant capacity due to the high contents of antioxidant compounds (polyphenols and carotenoids) and may have potential health benefits for diseases associated with oxidative stress.

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Preliminary Insights in Sensory Profile of Sweet Cherries

Foods ◽

10.3390/foods10030612 ◽

2021 ◽

Vol 10 (3) ◽

pp. 612

Author(s):

Vânia Silva ◽

Sandra Pereira ◽

Alice Vilela ◽

Eunice Bacelar ◽

Francisco Guedes ◽

...

Keyword(s):

Sweet Cherry ◽

Prunus Avium ◽

Sugar Content ◽

Principal Component ◽

Titratable Acidity ◽

Physicochemical Characteristics ◽

Quality Parameters ◽

Sensory Profile ◽

Soluble Solids ◽

Sensory Data

Sweet cherry (Prunus avium L.) is a fruit appreciated by consumers for its well-known physical and sensory characteristics and its health benefits. Being an extremely perishable fruit, it is important to know the unique attributes of the cultivars to develop cultivation or postharvest strategies that can enhance their quality. This study aimed to understand the influence of physicochemical characteristics of two sweet cherry cultivars, Burlat and Van, on the food quality perception. Several parameters (weight, dimensions, soluble solids content (SSC), pH, titratable acidity (TA), colour, and texture) were measured and correlated with sensory data. Results showed that cv. Van presented heavier and firmer fruits with high sugar content. In turn, cv. Burlat showed higher pH, lower TA, and presented redder and brightest fruits. The principal component analysis revealed an evident separation between cultivars. Van cherries stood out for their sensory parameters and were classified as more acidic, bitter, and astringent, and presented a firmer texture. Contrarily, Burlat cherries were distinguished as being more flavourful, succulent, sweeter, and more uniform in terms of visual and colour parameters. The results of the sensory analysis suggested that perceived quality does not always depend on and/or recognize the quality parameters inherent to the physicochemical characteristics of each cultivar.

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Relationships Linking the Colour and Elemental Concentrations of Blossom Honeys with Their Antioxidant Activity: A Chemometric Approach

Agriculture ◽

10.3390/agriculture11080702 ◽

2021 ◽

Vol 11 (8) ◽

pp. 702

Author(s):

Monika Kędzierska-Matysek ◽

Anna Teter ◽

Małgorzata Stryjecka ◽

Piotr Skałecki ◽

Piotr Domaradzki ◽

...

Keyword(s):

Antioxidant Activity ◽

Physicochemical Properties ◽

Black Locust ◽

Antioxidant Properties ◽

Principal Component ◽

Botanical Origin ◽

Antioxidant Parameters ◽

Colour Parameters ◽

Hue Angle ◽

Chemometric Approach

The antioxidant activity of honey depends on the botanical origin, which also determines their physicochemical properties. In this study, a multivariate analysis was used to confirm potential relationships between the antioxidant properties and colour parameters, as well as the content of seven elements in five types of artisanal honey (rapeseed, buckwheat, linden, black locust, and multifloral). The type of honey was found to significantly influence most of its physicochemical properties, colour parameters, and the content of potassium, manganese and copper. Antioxidant parameters were shown to be significantly positively correlated with redness and concentrations of copper and manganese, but negatively correlated with the hue angle and lightness. The principal component analysis confirmed that the darkest buckwheat honey had the highest antioxidant activity in combination with its specific colour parameters and content of antioxidant minerals (manganese, copper and zinc). The level of these parameters can be potentially used for the identification of buckwheat honey.

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The Effect of Mechanical Vibration during Transport under Model Conditions on the Shelf-Life, Quality and Physico-Chemical Parameters of Four Apple Cultivars

Agronomy ◽

10.3390/agronomy11010081 ◽

2021 ◽

Vol 11 (1) ◽

pp. 81

Author(s):

Dorota Walkowiak-Tomczak ◽

Natalia Idaszewska ◽

Grzegorz P. Łysiak ◽

Krzysztof Bieńczak

Keyword(s):

Antioxidant Capacity ◽

Dry Matter ◽

Mechanical Vibration ◽

Life Quality ◽

Titratable Acidity ◽

Quality Parameters ◽

Soluble Solids ◽

Chemical Parameters ◽

Polyphenol Content ◽

Flesh Colour

The study assessed the changes in the quality and physical and chemical parameters of apples of four cultivars (‘Gala’, ‘Idared’, ‘Topaz’, ‘Red Prince’) subjected to mechanical vibration during transport under model conditions and after storage (shelf-life). Quality changes in apples were evaluated based on skin and flesh colour, total soluble solids, dry matter, firmness, titratable acidity, pH value, total polyphenol content, and antioxidant capacity. The vibration applied at a frequency of 28 Hz caused changes in the above parameters, which were visible also after storage and depended on the cultivar, but often did not show any clear trend or direction or were not statistically significant. The values of the total colour difference factor ΔE showed considerable variations in the skin colour but only small variations in the flesh colour of individual cultivars. Vibration resulted in a decrease in firmness. Variations in dry matter, total soluble solids, pH, and titratable acidity were small, often insignificant. Mechanical vibration and storage led to an increase in the polyphenol content and antioxidant capacity of all studied cultivars. The greatest stability of quality parameters, relatively high content of bioactive compounds, and antioxidant capacity were observed for ‘Red Prince’. The lowest quality parameters were noted for ‘Gala’. The analysed cultivars continued to show a high level of antioxidant capacity after treatment, which allows the conclusion that they remain a good source of bioactive compounds after transport and short-term storage.

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Quality Assessment of Raw Honey Issued from Eastern Romania

Agriculture ◽

10.3390/agriculture11030247 ◽

2021 ◽

Vol 11 (3) ◽

pp. 247

Author(s):

Aida Albu ◽

Cristina-Gabriela Radu-Rusu ◽

Ioan Mircea Pop ◽

Gabriela Frunza ◽

Gherasim Nacu

Keyword(s):

Electrical Conductivity ◽

Refractive Index ◽

Storage Conditions ◽

Quality Parameters ◽

Climatic Conditions ◽

Ash Content ◽

Botanical Origin ◽

Free Acidity ◽

Qualitative Level ◽

Raw Honey

Romania is known among the main European honey producers, due to the variety of landforms as well as the diversity of the flora. Thirty-four honey samples of the acacia, linden and multifloral types, produced in eastern Romania and collected during 2013–2018, were physico-chemically analyzed using methods provided by the national and EU standards. The results of water-insoluble solids, color and refractive index were found to be 0.023–0.131%, 0.3–76.4 mm Pfund and 1.485–1.499, respectively. The moisture content ranged between 15.20% and 20.77%, solid substances content ranged between 79.23% and 84.80% and total soluble substances content ranged between 77.83 °Brix and 83.26 °Brix. The obtained values of specific gravity were from 1.414 to 1.450 g/cm3, pH ranged from 3.673 to 5.503 and free acidity ranged between 2.4 meq and 50 meq kg−1. The ash content and the electrical conductivity varied between 0.030 and 0.543% and 130 and 679 µS cm−1, respectively. Pearsonʹs correlation analysis showed an intense association of the ash content with electrical conductivity (r = 0.81). Our findings reveal the qualitative level of Romanian honey and the variation in quality parameters due to factors such as geographical region, climatic conditions, botanical origin and handling or storage conditions.

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