scholarly journals Physicochemical evaluation of the fruit pulp of Opuntia spp growing in the Mediterranean area under hard climate conditions

2020 ◽  
Vol 18 (1) ◽  
pp. 565-575
Author(s):  
Mohammed Bourhia ◽  
Hamza Elmahdaoui ◽  
Riaz Ullah ◽  
Samir Ibenmoussa ◽  
Abdelaaty Abdelaziz Shahat
Keyword(s):  
Water Activity ◽  
Biochemical Characterization ◽  
Physicochemical Characterization ◽  
Titratable Acidity ◽  
Bioactive Compound ◽  
Ash Content ◽  
Prickly Pear ◽  
Fruit Pulp ◽  
Climate Conditions ◽  
Total Titratable Acidity

AbstractBarbary fig called prickly pear is a plant belonging to family Cactaceae growing under hard climate conditions. A spiny variety of prickly pear named “Drbana” (Opuntia megacantha) and two non-spiny varieties named “Akria” and “Mlez” (Opuntia ficus-indica) growing in the Rhamna region (Morocco) were studied in terms of physicochemical characteristics. The physicochemical characterization (humidity, water activity, pH, total titratable acidity, Brix, and ash content) and the biochemical characterization (total carotenoid content, betalain content, total polyphenolic content, and ascorbic acid content) of the fruit pulp of prickly pear were performed according to the previously reported methods. The finding of physicochemical characterization of all studied varieties showed that the fruit pulp also contained an interesting bioactive compound classes in humidity, water activity, pH, total titratable acidity, Brix, and ash content. Regarding the biochemical characterization, the obtained finding showed the fruit pulp also contained an interesting bioactive compound classes particularly the total betalains, polyphenols, carotenoids, and ascorbic acids. Based on the obtained results in the current research work, we can affirm that the fruits of all studied varieties meet the requirement for being exploited in food, cosmetic, and pharmaceutical industries.

scholarly journals Promising Physical, Physicochemical, and Biochemical Background Contained in Peels of Prickly Pear Fruit Growing under Hard Ecological Conditions in the Mediterranean Countries

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Mohammed Bourhia ◽  
Hamza Elmahdaoui ◽  
Riaz Ullah ◽  
Ahmed Bari ◽  
Laila Benbacer
Keyword(s):  
Titratable Acidity ◽  
Ash Content ◽  
Prickly Pear ◽  
Carotenoid Content ◽  
Total Carotenoid ◽  
Total Carotenoid Content ◽  
Mediterranean Countries ◽  
Polyphenolic Content ◽  
Total Titratable Acidity ◽  
Total Polyphenolic Content

Background. Prickly pear (Opuntia spp.), called Barbary fig, is a cultivated species springing from family Cactaceae. It is native to Mexico and has been naturalized in other continents, especially the Mediterranean countries (North Africa). The aim of the study was to investigate the physical, physicochemical, and biochemical criteria of peels of three Moroccan prickly pear varieties (Aakria, Derbana, and Mles) growing in the Rhamna regions (dry area). Material and Methods. Both physicochemical characteristics (humidity, water activity, Brix, ash content, pH, and total titratable acidity) and biochemical characteristics (total carotenoid content, betalain content, total polyphenolic content, and ascorbic acid content) were were studied according to previously reported methods. Results. Regarding the physiochemical criteria, the moisture of the fresh peels of studied varieties ranged from 81.59 ± 0.02 to 83.47 ± 0.02%. The water activity (aw) ranged from 0.862 ± 0.001 to 0.872 ± 0.001. The values of Brix varied from 14.69 ± 0.05° Bx to 15.80 ± 0.03° Bx. pH values varied from 5.13 ± 0.01 to 5.32. The total titratable acidity values ranged from 0.130 ± 0.008 to 0.196 ± 0.014 g of citric acid/100 g of FM (fresh matter). The ash content values ranged from 8.92 ± 0.10 to 11.04 ± 0.06 g/100 g of FM. Regarding the biochemical criteria, the total carotenoid content ranged from 2.29 ± 0.01 to 2.87 ± 0.01 μg/g of FM. The total betalain content ranged from 6213.46 ± 58.86 to 8487.19 ± 51.71 μg/100 g of FM. The total polyphenolic content varied from 160 ± 3.55 to 243.79 ± 5.55 mg GA E/100 g of FM. The ascorbic content ranged from 58.21 ± 0.24 to 74.72 ± 0.17 mg/100 g of FM. Conclusion. The findings of physicochemical and biochemical criteria of the investigated varieties growing in Moroccan drylands showed promising results in terms of studied parameters.

scholarly journals Parâmetros físico-químicos de polpas de fruta produzidas na cidade de Petrolina – PE

2015 ◽  
Vol 10 (4) ◽  
pp. 01 ◽  
Author(s):  
A. C. Honorato ◽  
C. B. R. Dias ◽  
E. B. Souza ◽  
I. R. B. Carvalho ◽  
K. S. M. Sousa
Keyword(s):  
Ascorbic Acid ◽  
Physicochemical Parameters ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Chemical Characteristics ◽  
Fruit Pulp ◽  
Total Titratable Acidity ◽  
Physical And Chemical ◽  
The City

<p>Este trabalho teve como objetivo avaliar os parâmetros físico-químicos de polpas de fruta produzidas e comercializadas na cidade de Petrolina-PE, tendo como referência a Instrução Normativa nº 1, de 7 jan. 2000, do Ministério da Agricultura que define as características físicas e químicas estabelecendo limites mínimos e máximos específicos para cada polpa de fruta. Foram avaliadas duas marcas (1 e 2) de polpas de abacaxi, cacau, caju, graviola, maracujá e umbu, analisadas quanto aos parâmetros de pH, sólidos solúveis totais (SST), acidez total titulável (ATT), ácido ascórbico, relação SST/ATT e sólidos totais. Os resultados permitem inferir que a marca 2 apresentou qualidade superior na maioria dos parâmetros avaliados quando comparado com a marca 1. Entretanto para alguns sabores de polpa as duas marcas não atenderam os valores padrões. Entre as polpas o único sabor que apresentou os padrões exigidos foi a polpa de caju em ambas as marcas, e a que apresentou resultado de pior qualidade diante dos padrões foi a polpa de maracujá principalmente da marca 1. Dessa forma constata-se que há grandes variações entre as marcas, e entre alguns parâmetros, o que compromete a qualidade das polpas, prejudicando assim o consumidor.</p><p align="center"><strong><em>Physicochemical parameters of fruit pulps produced in Petrolina – PE</em></strong></p><p><strong>Abstract</strong><strong>: </strong>This study aimed to evaluate the physicochemical parameters of fruit pulps produced and marketed in the city of Petrolina-PE, with reference to the Instruction Nº 1 of 7 January 2000 of the Ministry of Agriculture, which defines the physical and chemical characteristics setting minimum and maximum limits specific to each fruit pulp. We evaluated two brands (1 and 2) of pineapple, cocoa, cashew, soursop, passion and umbu fruit pulp, analyzed for pH, total soluble solids (TSS), total titratable acidity (TTA), ascorbic acid, TSS / TTA and total solids parameters. Results show that the brand 2 showed superior in most evaluated parameters when compared to the brand 1. However, for some pulp flavors of both brands did not reached the standards values. Among the pulps, the only flavor that presented the required standards was the cashew pulp in both brands, and presented the results of lower quality on the standards was the passion fruit pulp mainly brand 1. Thus, it appears that there are great variations between brands and between some parameters, which compromises the quality of the pulp, thus impairing the consumer.</p>

scholarly journals Potential Natural Dyes Food from the Powder of Prickly Pear Fruit Peels (Opuntia spp.) Growing in the Mediterranean Basin under Climate Stress

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Mohammed Bourhia ◽  
Hamza Elmahdaoui ◽  
Samir Iben Moussa ◽  
Riaz Ullah ◽  
Ahmed Bari
Keyword(s):  
Biochemical Analysis ◽  
Titratable Acidity ◽  
Prickly Pear ◽  
Carotenoid Content ◽  
Total Carotenoid ◽  
Pear Fruit ◽  
Total Carotenoid Content ◽  
Polyphenolic Content ◽  
Total Titratable Acidity ◽  
Total Polyphenolic Content

Background. Barbary fig (Opuntia spp), called prickly pear, is a cultivated species belonging to family Cactaceae. It produces fruits one time per year during a short season. It is largely spreading in the Mediterranean countries. The aim of the study was to investigate the physicochemical and biochemical analysis of powder of prickly pear fruit peels of three Moroccan varieties (Aakria, Derbana, and Mles). Material and Methods. Both physicochemical analysis (humidity, water activity, Brix, ash content, pH, and total titratable acidity) and biochemical analysis (total carotenoid content, betalain content, total polyphenolic content, and ascorbic acid content) were effectuated according to protocols reported within the present research work. Results. Regarding the physiochemical analysis, the humidity of powder of prickly pear fruit peels ranged from 10.173 ± 0.002 to 15.27 ± 0.02%. The water activity (aw) ranged from 0.17 ± 0.002 to 0.336 ± 0.002. The values of Brix ranged from 68.67 ± 0.33 to 74.22 ± 0.51° Bx. pH values ranged from 5.41 ± 0.01 to 5.62 ± 0.01. The total titratable acidity values ranged from 0.644 ± 0.014 to 0.76 ± 0.007 g citric acid/100 g DM (dry matter). The ash content ranged from 1.02 ± 0.02 to 11.41 ± 0.03 g/100 g DM. Regarding the biochemical analysis, the total carotenoid content ranged from 5.14 ± 0.10 to 9.79 ± 0.06 mg/g of FM (Fresh matter). The total betalain content ranged from 2 ± 0.69 to 37.66 ± 2.65 mg/100 g of DM. The total polyphenolic content ranged from 1739.92 ± 13.69 to 2409.66 ± 43.65 mg gallic acid equivalent (GAE)/100 g of DM. The ascorbic content values ranged from 186.78 ± 13.23 to 294.04 ± 5.81 mg/100 g of DM. Conclusion. The results showed an interesting richness of the investigated powder in pigments (betacyanins, indicaxanthins, and carotenoids) and nutritional compounds including sugar, proteins, and vitamins that make this powder interesting for being used as a dye in food.

scholarly journals Stability of cactus-pear powder during storage

2016 ◽  
Vol 20 (2) ◽  
pp. 169-173
Author(s):  
Plúvia O. Galdino ◽  
Rossana M. F. de Figueirêdo ◽  
Alexandre J. de M. Queiroz ◽  
Pablícia O. Galdino ◽  
Tâmila K. da S. Fernandes
Keyword(s):  
Water Content ◽  
Water Activity ◽  
Reducing Sugars ◽  
Titratable Acidity ◽  
High Water ◽  
Soluble Solids ◽  
High Water Content ◽  
Cactus Pear ◽  
Total Titratable Acidity ◽  
The Stability

ABSTRACT The stability of cactus-pear powder, obtained by the process of spray drying for 40 days, was evaluated under controlled conditions of relative air humidity (83%) and temperature (25 and 40 °C). The whole pulp was characterized with regard to its physico-chemical parameters: pH, total titratable acidity, soluble solids, water content, total solids, ashes, reducing sugars, total sugars, non-reducing sugars, luminosity, redness, yellowness and water activity. The stored samples in powder were evaluated every 10 days for water content, water activity, total titratable acidity and color (luminosity, redness and yellowness). The whole pulp was slightly acidic and perishable, due to the high water content. During storage, the packages did not prevent water absorption, thus increasing water content and, consequently, water activity. Yellowness oscillated along the storage time, but the predominance of the yellow color was not affected.

scholarly journals Physicochemical Properties, Proximate Composition and Total Viable Counts of Staphylococcus aureus in ‘Nono’ And Yoghurt Samples in Kaduna, Nigeria

2021 ◽  
Vol 9 (1) ◽  
pp. 15-20
Author(s):  
Fausat Adeola Abdulrahman ◽  
Emiade Sanmi
Keyword(s):  
Staphylococcus Aureus ◽  
Moisture Content ◽  
Protein Content ◽  
Crude Protein ◽  
Titratable Acidity ◽  
Fat Content ◽  
Ash Content ◽  
Crude Protein Content ◽  
Milk Samples ◽  
Total Titratable Acidity

The study aims at determining the physicochemical, proximate composition and the total viable count of Staphylococcus aureus in ‘Nono’ and yoghurt samples in Kaduna, Nigeria.Three hundred and eighty-four (384) fermented milk samples (Nono and yoghurt) were obtained from different selling points and were evaluated for the occurrence of S. aureus. The physicochemical and proximate analyses (pH, total titratable acidity, moisture content, ash content, protein content, and fat content) were determined. The results of the analyses showed that Nono had pH range of 3.56-3.61, total titratable acidity: 0.71-1.72, moisture content: 82.23-83.87%, ash content: 0.30-0.31%, crude protein content: 1.50-1.61%, crude fat content: 0.35-0.38 %. For yoghurt, the pH ranged from 3.76 -3.82, total titratable acidity: 1.10 -1.15, moisture content: 77.76-80.06%, ash content: 0.68- 0.70%, crude protein content: 3.40-3.45% and crude fat content: 1.76-1.79% from all the study areas. One hundred and four of the total samples were contaminated with S. aureus. Out of the 104 isolates of S. aureus that were isolated and identified, 88 were coagulase positive S.aureus. The Microgen Staph ID kit (Oxoid) was used to further confirm the characteristics of the 60 isolates of the coagulase positive S. aureus. The kit confirmed 43 isolates as S. aureus, the results indicated the presence of S. aureus in the milk samples which is of public health importance, as this can contribute to food-borne intoxication which can lead to food poisoning. There is a need for proper pasteurisation of raw milk to help eradicate S. aureus infection before human consumption.

scholarly journals Elaboration of Blends of Pitaya Pulps With Acerola

2021 ◽  
Vol 13 (3) ◽  
pp. 53
Author(s):  
Maria S. de Moraes ◽  
Rossana Maria Feitosa de Figueirêdo ◽  
Alexandre J. de M. Queiroz ◽  
Luís P. F. R da Silva ◽  
Mailson G. Gonçalves ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Water Content ◽  
Water Activity ◽  
Economic Value ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Colorimetric Analysis ◽  
Physical Chemical ◽  
Total Titratable Acidity ◽  
Hue Angle

Pitaya and acerola are fruits rich in nutrients and can be used in blends formulation in order to improve the sensory characteristics of both pulps in isolation and complement each other in terms of nutritional aspects. Thus, the aim of this research was to develop different blends of pitaya pulp with acerola and choose the best formulation based on physical-chemical and colorimetric characteristics. Three blends formulations were prepared: F1-90% pitaya and 10% acerola; F2-70% pitaya and 30% acerola; and F3-50% pitaya and 50% acerola. The formulations were evaluated for physical-chemical parameters of water activity, water content, ash, total soluble solids (SST), pH, total titratable acidity (ATT), SST/ATT ratio, ascorbic acid, proteins, lipids, sugars totals, reducers and non-reducers and colorimetric analysis. The obtained data were subjected to variance analysis (ANOVA) and to comparison between means by the Tukey test at 5% probability. The formulation F1 stood out when compared to the others. The parameters pH, soluble solids, ratio SS/ATT, ash, water content, water activity, proteins, sugars, luminosity and hue angle were the ones that gave the formulation F1 the best results. However, it is noteworthy that the formulation F3 presented a greater amount of ascorbic acid and higher values of a, b and chroma in the colorimetric analysis. The use of these fruits allows to obtain an innovative product with excellent nutritional and functional characteristics. The blend is a viable alternative for the use of perishable and seasonal fruits, adding greater economic value to the very promising product to the market.

scholarly journals Determination of thermal diffusivity in papaya pulp as a function of maturation stage

2008 ◽  
Vol 30 (3) ◽  
pp. 611-615 ◽  
Author(s):  
Savio Figueira Corrêa ◽  
Maximiliano Silva de Souza ◽  
Talita Pereira ◽  
Gustavo Verçosa de Lima Alves ◽  
Jurandi Gonçalves de Oliveira ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Carica Papaya ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Maturation Stage ◽  
Fruit Pulp ◽  
Total Titratable Acidity ◽  
Different Depths ◽  
Papaya Pulp

In order to determine the penetration of the thermal wave in the papaya fruit pulp (Carica papaya L.), cv. Golden, thermal diffusivity of the pulp was obtained measuring temperature at four different depths. Measurements were carried out initially with the fruit on the first stage of maturity. The changes of the thermal diffusivity were expressed as a function of ripening. A temporal decrease of the thermal diffusivity was observed. Chemical (pH, soluble solids and total titratable acidity) and physical (pulp firmness) properties were measured as well and the results were compared to the thermal diffusivity change.

scholarly journals Desenvolvimento de Massa de Pizza Enriquecida com Hibisco

2021 ◽  
Vol 24 (5-esp.) ◽  
pp. 504-510
Author(s):  
Nara Vanessa dos Anjos Barros ◽  
Joana Carvalho Serra ◽  
Rosielle Alves de Moura ◽  
Paulo Víctor de Lima Sousa ◽  
Regina Márcia Soares Cavalcante
Keyword(s):  
Purchase Intention ◽  
Food Production ◽  
Titratable Acidity ◽  
Physicochemical Analysis ◽  
Ash Content ◽  
Bakery Product ◽  
Physical Chemical ◽  
Significant Difference ◽  
Total Titratable Acidity ◽  
Low Levels

Atualmente, busca-se constantemente o desenvolvimento de novos produtos para atender as necessidades dos consumidores, sendo a utilização do hibisco (Hibiscus sabidariffa L.) na produção alimentícia uma forma simples e econômica de agregar sabor aos produtos e beneficiar a saúde de quem os consome. O presente trabalho teve como objetivo desenvolver uma massa de pizza enriquecida com farinha de folhas de hibisco (FFH). Adicionou-se diferentes concentrações da FFH às massas de pizza, as quais foram submetidas às análises sensoriais e físico-químicas. Não houve diferença estatística significativa entre a formulação I (massa de pizza enriquecida com 2% de FFH) e a formulação II (massa de pizza enriquecida com 4% de FFH) em relação à aceitação global. Para as análises físico-químicas, as formulações obtiveram teores baixos de umidade (F1 - 18,07 ± 1,07; F2 - 19,3 ± 0,31) e um bom conteúdo de cinzas (F1 - 1,45 ± 0,06; F2 - 1,57 ± 0,10). Para o pH e acidez, os resultados obtidos estão de acordo com o preconizado pela legislação vigente, com resultados que variaram de 5,0 a 6,0 para o pH, e de 1,7 a 2,8, para a acidez total titulável. Constatou-se que ambas amostras obtiveram boa aceitação por parte dos provadores, assim como uma intenção de compra satisfatória. Em relação às análises físico-químicas, verificou-se que os produtos desenvolvidos obtiveram características semelhantes a outras massas enriquecidas, estando de acordo com o preconizado nas legislações para este produto.   Palavras-chave:  Desenvolvimento de Produtos. Hibiscus sabidariffa L. Produto de Panificação.   Abstract Currently, there is a constant search for the development of new products to meet the consumer’s needs, and the use of hibiscus (Hibiscus sabidariffa L.) in food production is a simple and economical way to add flavor to products and benefit the health of those who consume them. The present work had as objective to develop pizza dough enriched with hibiscus leaf flour (HLF). Different concentrations of HLF were added to the pizza masses, which were submitted to the sensorial and physicochemical analyzes. There was no statistically significant difference between formulation I (2% HLF enriched pizza mass) and formulation II (4% HLF enriched pizza mass) in relation to the overall acceptance. For the physicochemical analysis, the formulations obtained low levels of humidity (F1 - 18.07 ± 1.07; F2 - 19.3 ± 0.31) and a good ash content (F1 - 1.45 ± 0, 06; F2 - 1.57 ± 0.10). For pH and acidity, the results obtained are in accordance with the recommendations of the current legislation, with results ranging from 5.0 to 6.0 for pH, and from 1.7 to 2.8, for total titratable acidity. It was found that both samples obtained good acceptance by the tasters, as well as a satisfactory purchase intention. Regarding the physical-chemical analysis, it was found that the products developed obtained characteristics similar to other enriched masses, being in accordance with the recommendations in the legislation for this product.   Keywords: Product Development. Hibiscus Sabidariffa L. Bakery Product.

scholarly journals Physicochemical Characterization of Selected Pomegranate (Punica granatum L.) Cultivars

2021 ◽  
Vol 2 (2) ◽  
pp. 425-433
Author(s):  
Vijay Singh MEENA ◽  
Bhushan BİBWE ◽  
Bharat BHUSHAN ◽  
Kirti JALGAONKAR ◽  
Manoj MAHAWAR
Keyword(s):  
Moisture Content ◽  
Physicochemical Characterization ◽  
Chemical Properties ◽  
Textural Properties ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Ash Content ◽  
Soluble Solids ◽  
Cultivar Differences ◽  
Total Phenolic

The physical and chemical characteristics of five pomegranate cultivars (Mridula, Ganesh, White muscut, G-137 and Jalor seedless) were examined in the present investigation. Physical properties of different cultivars were determined such as major diameter (85.05 to 91.62 mm), intermediate diameter (76.85 to 87.83 mm), minor diameter (79.86 to 90.01 mm), sphericity (0.903 to 0.937), fruit weight (294.4 to 404.14 g), fruit volume (289 to 387 mL), number of arils per fruit, weight of 100 arils were evaluated and analysed for the varietal difference. In addition, properties such as peel moisture content (68.72 to 74.15% w.b.), aril moisture content (78.25 to 81.82% w.b.), peel ash content (0.81 to 1.51%), aril ash content (0.29 to 0.53%), juice pH (3.47 to 3.96), total soluble solids (11.60 to 13.00 °Brix), titratable acidity (0.42 to 0.58%), total phenolic content, juice yield per fruit (104 to 186 mL) juice turbidity (142.20 to 364.50 NTU) and textural properties, like fruit compressive strength/firmness of arils (23.09 to 34.54 N), cutting strength of peel (84.33 to 111.35 N) and aril skin puncture force (0.28 to 0.38 N) were also investigated. Overall results suggested that the measured physico-chemical properties were quite different by the cultivar differences.

scholarly journals Effect of Sugar-Pectin-Citric Acid Pre-Commercialization Formulation on the Physicochemical, Sensory, and Shelf-Life Properties of Musa cavendish Banana Jam

2021 ◽  
Vol 50 (5) ◽  
pp. 1329-1342
Author(s):  
Wan Abd Al Qadr Imad Wan-Mohtar ◽  
Sarina Abdul Halim-Lim ◽  
Joshini Pillai Balamurugan ◽  
Mohd Zahiruddin Mohd Saad ◽  
Nur Asyiqin Zahia Azizan ◽  
...  
Keyword(s):  
Citric Acid ◽  
Shelf Life ◽  
Water Activity ◽  
Titratable Acidity ◽  
High Potassium ◽  
Life Study ◽  
Overall Acceptability ◽  
Cavendish Banana ◽  
Total Titratable Acidity ◽  
Cultivated Species

Cavendish banana is the second most cultivated species in Malaysia due to its high potassium and vitamin B6 content. However, there has been little commercialisation of Cavendish banana in jam making to date because of its unappealing physical characteristics and unsavoury taste. In the present study, response surface methodology was used to determine the optimum quantity of sugar (175-275 g)-pectin (3-7 g)-citric acid (150-234 mL) (SPC) on water activity, °Brix, colour analysis, pH, total titratable acidity (TTA), and sensory attributes of formulated banana jams. The amount of sugar-pectin-citric acid was found to have an effect on the TTA and pH of the banana jams. Conversely, water activity and °Brix were only affected by the amount of sugar. The lightness, L* of the banana jams was influenced by the quantity of pectin and the volume of citric acid added. Sensory analysis using 30 panellists showed that there were changes in the colour, taste, aroma, texture, and overall acceptability of banana jam depending on the amount of sugar used. In a shelf life study, banana jams stored at 4 °C were found to have a longer shelf life compared to those stored at 25 °C. Overall, the optimal formulation for a high-quality banana jam was 281.79 g of sugar, 4.13 g of pectin, and 264.66 mL of citric acid. This study constitutes the first report on the potential pre-commercialisation formulation for Cavendish banana jam production.

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