scholarly journals Sensorial, Melissopalynological and Physico-Chemical Characteristics of Honey from Babors Kabylia’s Region (Algeria)

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 225
Author(s):  
Asma Ghorab ◽  
María Shantal Rodríguez-Flores ◽  
Rifka Nakib ◽  
Olga Escuredo ◽  
Latifa Haderbache ◽  
...  
Keyword(s):  
Sensory Properties ◽  
Chemical Components ◽  
Chemical Characteristics ◽  
Pollen Spectrum ◽  
Botanical Origin ◽  
Flavonoid Content ◽  
Chemical Parameters ◽  
High Tendency ◽  
Physico Chemical ◽  
Pollen Types

This study aimed to characterize the honeys of Babors Kabylia through sensory, melissopalynological and physico-chemical parameters. Thirty samples of honey produced in this region were collected over a period of two years and analyzed. All the samples presented physico-chemical parameters in conformity with legislation on honey quality, with few exceptions, linked mainly to beekeeping management. The pollen spectrum revealed a great diversity with 96 pollen types. The main pollen types were spontaneous species as Fabaceae (Hedysarum, Trifolium, Genisteae plants), Asteraceae plants, Ericaceae (Erica arborea L.) or Myrtus and Pistacia. The sensory properties of samples showed a high tendency to crystallization, the colors were from white to brown, but most of them had gold color. Smell and odor corresponded mainly to vegetal and fruity families and in taste perceptions besides sweetness highlighted sourness and saltiness notes. Seventeen samples were polyfloral, one was from honeydew and twelve were monofloral from heather, genista plants, sulla, blackberry or Asteraceae. Heather and the honeydew samples showed the darkest color, the highest electrical conductivity and phenol and flavonoid content. A statistical analysis based on the most representative pollen types, sensory properties and some physico-chemical components allowed the differentiation of honey samples in terms of botanical origin.

scholarly journals Evaluation of Pollen and Chemical Composition of Honey Samples Sourced from Open Markets in Anambra State, Nigeria to Ascertain their Authenticity

2019 ◽  
pp. 1-12
Author(s):  
Njokuocha, Reginald Chukwuemeka
Keyword(s):  
Chemical Analysis ◽  
Chemical Components ◽  
Botanical Origin ◽  
Chemical Parameters ◽  
Pollen Data ◽  
Anambra State ◽  
Hydroxymethyl Furfural ◽  
Physico Chemical ◽  
Pollen Types ◽  
Open Markets

Aims: To ascertain the predominant honey plants that served as major sources of nectar and or pollen to the honeybees and to determine the quantitative presence of some physico-chemical components of the honey samples. Study Design: The honey samples were collected from the various locations based on purposive sampling. Place and Duration of Study: The samples were collected from seven towns in three Local Government Areas of Anambra State as follows; Ukpor, Usumenyi and Ezinifite (Nnewi South LGA), Nnokwa, Alor and Nnobi (Idemmili South LGA) and Ezinifite (Aguata LGA) between January and April, 2013. Methodology: The honey samples were dissolved in warm (40ºC) acidified water and subsequently subjected to acetolysis treatment. The recovered residues were suspended in glycerol-alcohol mixture in vials from where samples were collected for routine pollen count and identification. The chemical analysis was carried out according to the analysis of the Association of Official Analytical Chemists with four replicates. The pollen data were converted to percentage, while data from chemical parameters were converted to mean and standard deviation. Results: A total of 67 pollen types belonging to 39 families were identified. The honey samples were grouped into two based on the botanical origin: three monofloral and four polyfloral honeys. The predominant honey plants include Hymenocardia acida, Combtretaceae/Melastomataceae, Lannea sp., Alchornea cordifolia and Phyllanthus muellerianus. The chemical analysis showed that the values of all the parameters (moisture, pH, Sucrose, Protein, Hydroxymethyl furfural, etc) tested were within the acceptable limits of international honey standard. However, the sum of glucose and fructose in three honey samples did not meet the 60g/100g recommended as minimum limit for blossom honeys. Conclusion: The chemical analysis showed that the honey samples contained acceptable standard concentrations of all the physicochemical parameters (such as HMF, protein, moisture, sucrose, etc.)  tested with exception of the sum of glucose and fructose which did not meet the standard in some samples. The predominant honey plants that served as sources of nectar and pollen in the to the bees include Hymenocardia acida, Lannea sp., Phyllanthus muellerianus and members of the Combretaceae/Melastomataceae families.

scholarly journals Dilution Ratio and Pasteurization Effects on the Physico-chemical Characteristics of the Pulp of Saba senegalensis of Côte d'Ivoire

2019 ◽  
pp. 1-9
Author(s):  
Yapi Elisée Kouakoua ◽  
Aïssatou Coulibaly ◽  
Kouadio Claver Degbeu ◽  
N’Guessan Georges Amani
Keyword(s):  
Vitamin C ◽  
Cote D'ivoire ◽  
Total Soluble Solid ◽  
Chemical Characteristics ◽  
Dilution Ratio ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Soluble Solid ◽  
Saba Senegalensis ◽  
Β Carotene

Aims: The objective of this study was to evaluate the effect of dilution ratio and pasteurization on physico-chemical parameters of Saba senegalensis pulp in the context of its recovery. Study Design: The experimental set-up was of a completely randomized design. Place and Duration of Study: This study was carried out in the Department of Food Science and Technology, at the Laboratory of Food Biochemistry and Tropical Product Technology (BATPTL) of Nangui Abrogoua University, Abidjan, Côte d'Ivoire, between June and August 2019. Methodology: The pulp collected from the fruit was diluted according to the following pulp/water ratio (RPW; v/v): 1:0.5; 1:1 and 1:1.5 and pasteurized at 75°C at different times (5 min, 10 min and 15 min). The pH, titratable acidity (TA), Total soluble solid (TSS), vitamin C, β-carotene and the colour were determined on the different samples. Results: The results obtained during this study showed that all the physico-chemical parameters evaluated, except pH, are affected during dilution while during pasteurization only vitamin C and β-carotene are affected. During the respective dilutions, 50%, 62% and 66% of the vitamin C concentration decreased as well as 53%, 74% and 76% of β-carotene. It also led to a decrease in total soluble solid (TSS) of 32%, 50% and 59%. Following the pasteurization of each diluted pulp12%, 45% and 50% on average of the vitamin C are lost at the respective pasteurization time  (5 min, 10 min and 15 min respectively). For β-carotene the content decreases (50%) within the first 5 minutes and remains constant during the last 10 minutes of pasteurization. Conclusion: During Saba senegalensis fruit processing into nectar, dilution and pasteurization factors must be considered in order to ensure the physico-chemical quality of the beverage. The physico-chemical characteristics were more affected during dilution than in pasteurization.

scholarly journals Gluten Free Biscuits in Local Market from Sibiu

2018 ◽  
Vol 10 (1) ◽  
pp. 13-16
Author(s):  
Cosmina-Mădălina Cherăţoiu ◽  
Mihai Ognean ◽  
Claudia Felicia Ognean ◽  
Ioan Danciu
Keyword(s):  
Water Activity ◽  
Sensory Properties ◽  
Breaking Point ◽  
Local Market ◽  
Gluten Free ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Sensory Qualities

Abstract The study was undertaken to assess the quality and sensory properties of gluten free biscuits (GFB) offered in local market in Sibiu. The chemical, physico-chemical parameters and sensory qualities of biscuits were studied. The result revealed that moisture of GFB is normal (<5-6%), the water activity is under 0.3 for 6 of the samples, the breaking point is 0.878 (B7) and 1.564 (B1) as a result of different ingredient used (mix flour-corn, soya, rice for sample B1, rice-chickpeas flour for sample B7). Sensory qualities were determinate by using the hedonic test and showed that the GFB were well accepted by the consumers.

Physico-Chemical Characteristics of Composite Flours

1975 ◽  
Vol 38 (7) ◽  
pp. 401-405
Author(s):  
M. W. PULLE ◽  
K. INO
Keyword(s):  
Protein Content ◽  
Marked Reduction ◽  
Amylose Content ◽  
Chemical Characteristics ◽  
Gelatinization Temperature ◽  
Chemical Parameters ◽  
Chemical Agents ◽  
Physico Chemical ◽  
Composite Flours ◽  
Protein Components

Physico-chemical parameters that influence dough attributes and baking quality were investigated in single and composite flours. Considerable variation in the starch and protein components was observed in the different formulations of wheat and substituent flours. Incorporation of kurakkan, sorghum, or manioc flour increased gelatinization temperature, viscosity, and amylose content irrespective of the extent of substitution. Although increases in amylose content were within tolerable limits, changes in gelatinization temperature and viscosity characteristics necessitate use of chemical agents and modified technology for preparation of acceptable products. A marked reduction in protein content was revealed in manioc-wheat composites, wherein nutritive fortification should comprise an additional requisite.

scholarly journals Spatial Distribution of Phytoplankton and Physico-Chemical Characteristics of Reservoir Agaie-Lapai Dam, Minna, Niger State, Nigeria

2016 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Ojutiku R. O. ◽  
Kolo R. J. ◽  
Yakubu M. A.
Keyword(s):  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Dam Reservoir ◽  
Reservoir Water ◽  
Aquatic Life ◽  
Physico Chemical ◽  
Irrigation Purpose ◽  
Productive Water ◽  
Taxonomic Groups ◽  
Fish Productivity

<p class="jbls">Presence of phytoplankton displays water quality and useablity by aquatic life. Agaie-Lapai Dam located in Niger State (latitude 9⁰ 39N and longitude 6⁰33E) was constructed for irrigation purpose and also to serves as source of livelihood to fishermen living in surroundings. The objective of the present research was conducted to assess the distribution of phytoplankton and physic-chemical assessment of Agaie-Lapai Dam. Reservoir Water.  Samples were collected fortnightly and analyzed for phytoplankton and physico-chemical parameters. The dissolved oxygen ranged from 3.8 – 5.15mg/l and temperature from 24.6 – 29.0<sup>0</sup>C.  A total of 14 species of 5 taxonomic groups were recorded. Bacillariophyceae was the most abundant group (44%) followed by Chlorophyceae (26%) while the lowest was Dinophyceae (8%). Phytoplankton abundances in the following descending order: Bacillariophyceae&gt;Cyanophyceae&gt;Chlorophyceae&gt;Chrysophyceae&gt;Dinophyceae.The spatial analysis revealed that phytoplankton was not equally distributed in the water that enabled it to function as productive water body. The observed physico-chemical parameters fell within thus it was within the tolerable limits. It is expected that the identified species will enhance fish productivity. </p>

scholarly journals Impact of physico-chemical parameters on zooplankton diversity of freshwater reservoirs around Amravati District, Maharashtra

2013 ◽  
Vol 14 (3) ◽  
pp. 131-135
Author(s):  
K. B. Sangve
Keyword(s):  
Surface Water ◽  
Impact Assessment ◽  
Indicator Species ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Water Reservoirs ◽  
Tolerant Species ◽  
Physico Chemical ◽  
Pollution Indicator ◽  
Course Of Study

Impact assessment was carried out on the zooplankton diversity of Pohra, Wadali and Chhatri surface water reservoirs around Amravati with respect to their physico-chemical characteristics. During course of study zooplankton were represented by five major groups i.e. Ostracoda, Rotifera, Cladocera, Protozoa and Copepoda.  High value of physico-chemical parameters and low zooplankton diversity were recorded in Chhatri reservoir, moderate in Wadali lake and low value of physico-chemical parameters and high zooplankton diversity were recorded in Pohara lake. The Chhatri reservoir was found to contain most of the pollution indicator species. Wadali reservoir also exhibited few pollution tolerant species. Prominent among them were Ceratodaphnia, Lepadella, Monostyla, Rotarria, Cyclops, Diaptomus and Ectocyclops. The water in all the reservoirs was found to be eutrophic in the order of Pohra > Wadali > Chhatri.

scholarly journals The character of the Bódva by the composition of the fishassociations

2007 ◽  
pp. 37-44
Author(s):  
Lajos Juhász
Keyword(s):  
Fish Species ◽  
Research Program ◽  
Food Source ◽  
Fish Fauna ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Protected Species ◽  
Physico Chemical ◽  
Hilly Region ◽  
Barbatula Barbatula

The Bódva is one of our rivers that flow outside the Hungarian borders and arrive to the country across the frontier.The Bódva is approximately 110 kilometres long, its upper course is mountaneous- like in its springfield in Slovakia and it reaches the Sajó by flowing among the lower hilly region. The river wall is ravine-like in more places, the river itself is devious, and the water basin is rather variable as in the underlay muddy segments and heavily shingly beds can also be found.By its fish fauna and physico-chemical characteristics, the Bódva is such aliving water that-after Borne and others (Nowicki, Thienemann) river zone system- can be regarded as an almost uniform typical Barbel zone.According to our research program (2001-2005) and literature resources we estimated the fish fauna of the Bódva on both the Slovakian and Hungarian course. From some four decades to the wide ecofaunistic examinations of the near past we surveyed the quondam and present fish species of the Bódva River. According to our survey some 40 species compose the recent fish fauna of this river.In the fish fauna of the Bódva those fish species that presently own a tight ecospectrum, sensitive to the changes of the environment thus so called indicator species, can also be found just like the less sensitive, invasive, aggressively reproducing species. By examining the changes in the fishfauna, the complex of those biogen and abiogen processes that affect the river can be indicated well. It can be stated that the fishfauna of the Bódva is rather rich with a countrywide measure also, and maintain a lot of rare, regressive protected and worth while protection species.In the last period of the construction, the racial and quantitive composition of the fishfauna of the upper course of the Bódva has changed significantly. Certain species (in the Hungarian course) has vanished almost totally or at least their number declined not ably. Among the vanishing species there are not only a few substantial, protected species of the fauna (e.g. Barbus pelononnesius petényi, Leucaspius delineatus, Zingel sterber, Barbatula barbatula), but the number of the once mass species also decreased appreciably (e.g. Rhodeus sericeus, Alburnoides bipunctatus, Cobitis elongatoides). With the above mentioned changes the number of other animals also decreased in the course that we examined (e.g. mussels, crabs). We examine the cause of these changes in the pollution of the river and according to that in the decrease of the food source and the negative changes of the physico-chemical parameters of the water.

scholarly journals Assessment of Physico-Chemical Characteristics of Wastewater from Dairy industry

2021 ◽  
Vol 9 (5) ◽  
pp. 570-575
Keyword(s):  
Waste Water ◽  
Water Samples ◽  
Dairy Industry ◽  
Raw Milk ◽  
Wastewater Effluent ◽  
Chemical Characteristics ◽  
Waste Generation ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Ecological Problems

The present work is aimedto analyze Physico-Chemical parameters of wastewater effluent from a dairy industry in Chennai. The dairy industry which was taken for study purpose involves processing of raw milk into products like consumer milk, butter, cheese, ice-cream’s and other milk products.Considering the increased milk demand, the dairy industry in India is expected to grow speedily and have the waste generation and related ecological problems are also assumed increased importance. An attempt has been made to study the Physico-chemical characteristics of waste water generated from dairy industry near Chennai in Tamilnadu state of India. Waste water samples werecollected from the dairy industry and analyzed for pH, EC, TSS, NO3-, PO4, Cl-, Fe, BOD, COD, oil & grease

INFLUENCE OF PACKAGING ON THE PHYSICO-CHEMICAL PARAMETERS AND ORGANOLEPTIC EVALUATION OF TABLE WINE

2019 ◽  
Author(s):  
Т.А. ДРОЗДОВА ◽  
А.П. БИРЮКОВ ◽  
Н.Ю. КАЧАЕВА ◽  
Р.А. ДРОЗДОВ
Keyword(s):  
Red Wine ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Glass Bottle ◽  
Organoleptic Evaluation ◽  
Organoleptic Characteristics ◽  
Physico Chemical ◽  
Sweet Wines ◽  
Physical And Chemical

Определены физико-химические показатели 12 образцов сухих и полусладких белых и красных столовых вин, выработанных одним предприятием и разлитых в стеклобутылку (СБ), бутылку из полиэтилентерефталата и упаковку «пакет в коробке» (ПВК) в феврале 2018 г. холодным и горячим способами, с целью установления влияния упаковки на изменение органолептического состава и физико-химических показателей столовых вин. Физико-химический анализ и дегустация представленных образцов столовых вин проведены в марте 2018 г. с использованием общепринятых методик. Установлено, что через месяц после розлива в упаковку все опытные образцы соответствовали требованиям действующей нормативной документации на данный вид продукции и обладали оптимальными физико-химическими показателями, кроме образца полусладкого красного вина в СБ, который на момент анализа был подвержен микробиологическому воздействию. Во всех исследованных образцах столовых вин обнаружен 1,2-пропиленгликоль, но его содержание не превышало допустимых норм. По итогам дегустации для сухих столовых вин рекомендован розлив в СБ, поскольку холодный розлив, применяемый при этом виде упаковки, практически не влияет на изменение органолептических характеристик продукта. Для полусладких вин рекомендуется горячий розлив, поскольку он препятствует забраживанию и задушке вина, а розлив в упаковку ПВК позволяет сохранять качество вина. Physico-chemical parameters of 12 samples of dry and semi-sweet white and red table wines produced by one enterprise and poured into a glass bottle (GB), a bottle of polyethylene terephthalate and a bag-in-box in February 2018 by cold and hot methods were determined in order to establish the influence of packaging on the change in the organoleptic composition and physico-chemical characteristics of table wines. Physical and chemical analysis and tasting of the presented samples of table wines were carried out in March 2018 using generally accepted methods. It was found that a month after filling in the package, all prototypes met the requirements of the current regulatory documentation for this type of product and had optimal physico-chemical parameters, except for the sample of semi-sweet red wine in the GB, which at the time of analysis was exposed to microbiological effects. In all the studied samples of table wines 1,2-propylene glycol was found, but its content did not exceed the permissible norms. Following the results of the tasting, bottling in the GB is recommended for dry table wines, since the cold bottling used in this type of packaging practically does not affect the change in the organoleptic characteristics of the product. For sweet wines it is recommended that hot-filling because it prevents fermenting and suffocating wine and bottling in bag-in-box allows to preserve the quality of the wine.

scholarly journals Effects of iodized salt on the physico-chemical parameters and the sensory properties of dry-cured pork loin

Meso ◽  
2018 ◽  
Vol 20 (4) ◽  
pp. 300-306
Author(s):  
Mateja Lušnic Polak ◽  
Tomaž Polak
Keyword(s):  
Sensory Properties ◽  
Iodized Salt ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Chemische Analyse ◽  
Pork Loin

Meersalz wird in der Fleischindustrie vorwiegend für die Zubereitung von haltbaren getrockneten Fleischerzeugnissen verwendet, wobei für die Pasteurisierung und Sterilisierung Pökelsalz verwendet wird, während jodhaltiges Speisesalz bei einem geringeren Anteil der Produkte zum Einsatz kommt. Der Hauptbestandteil von Pökelsalz ist nicht jodiertes Salz (das durch Verdampfung gewonnen wird). Ziel dieser Untersuchung war es zu prüfen, ob sich der Einsatz von Meersalz oder jodhaltigem Meersalz anstatt von nicht jodiertem Salz (das durch Verdampfung gewonnen wird) auf die physikalisch-chemischen Parameter und die sensorischen Eigenschaften von haltbaren getrockneten Fleischprodukten auswirkt. Zu diesem Zweck wurden die Proben des getrockneten Schweinekarrees in drei Gruppen eingeteilt: die erste Gruppe umfasste Proben von frischem Karree, das mit nicht jodiertem Meersalz zubereitet wurde, die zweite Gruppe wurde durch Verwendung von jodiertem Meersalz zubereitet und die Kontrollgruppe durch Verwendung von nicht jodiertem Salz, das durch Verdampfung gewonnen wurde. Die durchgeführten Analysen des getrockneten Schweinekarrees umfassten eine physikalisch-chemische Analyse der wichtigsten Inhaltsstoffe, die Messung der Produkte der Lipidoxidation (reaktive Verbindungen der Thiobarbitursäure und die Peroxidzahl), die Bestimmung der thermodynamischen Wasseraktivität, die instrumentelle Farbanalyse anhand des Chronometers Minolta CR-200b und die sensorische Analyse anhand der Methode der quantitativen deskriptiven Analyse. Obwohl sich bei der Einführung von jodhaltigem Meersalz (mit einem ausgewiesenem Anteil von Kaliumjodid von 26 bis 39 mg pro kg und dem festgelegten Anteil von 15 mg pro l/kg) zeigte, dass Jod die Oxidation der Lipide und der Farbe nicht beschleunigt, wurde bei der sensorischen Bewertung der Eigenschaften im Vergleich zu der Kontrollgruppe (nicht jodiertes Salz, das durch Verdampfung gewonnen wurde) festgestellt, dass jodhaltiges Salz einen unangenehmen Geruch und ein schlechtes Aroma des getrockneten Schweinekarrees verursacht.

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