From the Beehives: Identification and Comparison of Physicochemical Properties of Algerian Honey

Guerzou, Mokhtar; Aouissi, Hani Amir; Guerzou, Ahlem; Burlakovs, Juris; Doumandji, Salaheddine; Krauklis, Andrey E.

doi:10.3390/resources10100094

Cited by 24 publications

(16 citation statements)

References 56 publications

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“…Honey acidity is affected by several factors, such as different content of organic acids, different geographical origins, and the season when honey is harvested (Tornuk et al 2013;Da Silva et al 2016). The honey acidity from the bee A. cerana in our study (Table 2) differed from previous studied by Wu et al (2020) for A. cerana cerana honey is 0.80 mol/kg, and Guerzou et al (2021) ranges from 11 to 47 meq/kg for Algerian honey. Furthermore, it differed from Erwan et al (2020) that honey acidity from the bee A. mellifera was produced by extrafloral nectar (sugar palm and coconut saps) ranging from 22.00 to 43.00 mL NaOH/kg.…”

Section: Acidity Of Honeycontrasting

confidence: 97%

Honey quality from the bee Apis cerana, honey potency produced by coconut and sugar palm saps

Erwan¹,

Agussalim²

2022

Biodiversitas

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Abstract. Erwan, Agussalim. 2022. Honey quality from the bee Apis cerana, honey potency produced by coconut and sugar palm saps. Biodiversitas 23: 5854-5861. One of the big problems when keeping honeybees is the limited sustainable feed, especially in the rainy season. The objectives of this study were to evaluate the honey quality from the bee Apis cerana based on the chemical composition and honey potency produced by the coconut and sugar palm saps. This study using thirty colonies of the bee A. cerana was divided into six treatments consisting of sugar palm sap without sugar palm pollen, coconut sap without sugar palm pollen, coconut sap of 50% + sugar palm sap of 50% without sugar palm pollen, sugar palm sap was added by sugar palm pollen; coconut sap was added by sugar palm pollen; coconut sap of 50% + sugar palm sap of 50% was added by sugar palm pollen. The chemical composition of honey from the A. cerana was moisture (20.76 to 21.80%), reducing sugar (62.78 to 68.37%), sucrose (1.44 to 3.42%), diastase enzyme activity (5.17 to 9.04 DN), hydroxymethylfurfural (2.24 to 5.81 mg/kg), and acidity (26.00 to 36.33 mL NaOH/kg). Honey potency produced by the coconut and sugar palm saps in 100 hectares area produces honey was 1542.857 tons/year and 1150 tons/year, respectively. It can be concluded that the quality of A. cerana honey, produced by the sugar palm and coconut saps, is acceptable by the Indonesian national and international standards. The sugar palm and coconut saps have big potential as bee feed, especially for the bee A. cerana.

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Section: Acidity Of Honeycontrasting

confidence: 97%

Honey quality from the bee Apis cerana, honey potency produced by coconut and sugar palm saps

Erwan¹,

Agussalim²

2022

Biodiversitas

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“…This allows us to state that the cement has attached to the surface of the wood because the clinkers act as a glue. [ 101 ]. Similarly, there are 3 distinct sets of peaks in the lime-treated wood (W IL and W IIL ) spectra, namely: (i) 4 peaks at 28.84°, 29.58°, and 84.92° attribute to CaO 2 (85-0514), (ii) 8 peaks at 18,19°, 34.25°, 47.33°, 50.94°, 54.49°, 62.76°, 64.49°, and 71.92° attribute to Ca(OH) 2 (89-2779); and (iii) 4 peaks at 22.53°, 39.59°, 43.30°, and 48.68° attribute to CaCO 3 (01-0837).…”

Section: Resultsmentioning

confidence: 99%

Conservation Environments’ Effect on the Compressive Strength Behaviour of Wood–Concrete Composites

et al. 2022

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This paper addresses the issues in making wood–concrete composites more resilient to environmental conditions and to improve their compressive strength. Tests were carried out on cubic specimens of 10 × 10 × 10 cm3 composed of ordinary concrete with a 2% redwood- and hardwood-chip dosage. Superficial treatments of cement and lime were applied to the wood chips. All specimens were kept for 28 days in the open air and for 12 months in: the open air, drinking water, seawater, and an oven. Consequently, the compressive strength of ordinary concrete is approximately 37.1 MPa. After 365 days of exposure to the open air, drinking water, seawater, and the oven, a resistance loss of 35.84, 36.06, 42.85, and 52.30% were observed, respectively. In all environments investigated, the untreated wood composite concrete’s resistance decreased significantly, while the cement/lime treatment of the wood enhanced them. However, only 15.5 MPa and 14.6 MPa were attained after the first 28 days in the cases of the redwood and the hardwood treated with lime. These findings indicate that the resistance of wood–concrete composites depends on the type of wood used. Treating wood chips with cement is a potential method for making these materials resistant in conservation situations determined by the cement’s chemical composition. The current study has implications for researchers and practitioners for further understanding the impact of these eco-friendly concretes in the construction industry.

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“…The main factors that determine the high concentration of NO3 -are anthropogenic activities such as extensively irrigated with the excess application of inorganic nitrogenous fertilizers, return flow irrigation, and domestic and industrial discharges [5,72]. Pollution by nitrate is a matter of high concern as it can negatively affect ecosystems [73]. NO3 − ion is a familiar pollutant in water [74].…”

Section: Discussionmentioning

confidence: 99%

Chemometrics of the Environment: Hydrochemical Characterization of Groundwater in Lioua plain (North Africa) using Time Series and Multivariate Statistical Analysis

Athamena¹,

Gaagai²,

Aouissi³

et al. 2022

Preprint

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Drinking water quality is a major concern, especially in African countries. This manuscript aims to analyze the chemical composition of Lioua’s groundwater in order to determine the geological processes influencing the chemical elements' composition and origin. Therefore, chemometrics techniques such as multivariate statistical analysis (MSA) and time series methods (TSM) are used. Indeed, MSA includes a component analysis (PCA) and a cluster analysis (CA), while au-tocorrelation analysis (AA) supplemented by simple spectral density analysis (SDA) is used for TMS. PCA displays three main factors explaining a total variance (TV) of 85.01 %. Factors 1, 2, and 3 are 68.72%, 11.96%, and 8.89 % of TV, respectively. In the CA, three groups were controlled by TDS and EC. G1 reveals a close association between SO42−, K+, Ca2+, and TDS; G2 reveals a close association between Na+, Cl−, Mg2+, and EC; G3 shows the dissociation of bicarbonates HCO3− and NO3− from other chemical elements. AA shows a linear interrelationship of EC, Mg2+, Na+, K+, Cl−, and SO42−. However, NO3− and HCO3− indicate uncorrelated characteristics with other parameters. For SDA, the correlograms of Mg2+, Na+, K+, Cl−, and SO42− have a similar trend with EC. None-theless, pH, Ca2+, HCO3− and NO3− exhibit multiple peaks related to the presence of several dis-tinct cyclic mechanisms. The methods enabled the authors to conclude that the geochemical processes influencing the chemical composition are: (i) dissolution of evaporated mineral depos-its, (ii) water-rock interaction, and (iii) evaporation process. In addition, Groundwater exhibits two bipolar characteristics, one recorded with negative and positive charges on pH and Ca+ and another recorded only with negative charges on HCO3− and NO3−. On the other hand, SO42-, K+, Ca2+, and TDS are the major predominant elements in the groundwater’s chemical composition. The major participation of salts and chlorides is in the electrical conductivity of water. The dominance of the lithological factor in the overall mineralization of the Plio-Quaternary surface aquifer waters. The origins of HCO3− and NO3− are different. Indeed, carbonated for HCO3- has a carbonate origin, whereas NO3– has an anthropogenic origin. The salinity was affected by Mg2+, SO42-, Cl-, Na+, K+, and EC. Ca2+, HCO3− and NO3− are resulted from human activity fertilizers, the carbonate facies outcrops, and domestic sewage.

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From the Beehives: Identification and Comparison of Physicochemical Properties of Algerian Honey

Cited by 24 publications

References 56 publications

Honey quality from the bee Apis cerana, honey potency produced by coconut and sugar palm saps

Honey quality from the bee Apis cerana, honey potency produced by coconut and sugar palm saps

Conservation Environments’ Effect on the Compressive Strength Behaviour of Wood–Concrete Composites

Chemometrics of the Environment: Hydrochemical Characterization of Groundwater in Lioua plain (North Africa) using Time Series and Multivariate Statistical Analysis

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