scholarly journals Development of Aloe vera (Aloe barbadensis Miller) probiotic lassi using Lactobacillus fermentum bacteria

2020 ◽  
Vol 49 (3) ◽  
pp. 278-286
Author(s):  
O. Ben Moussa ◽  
I. Mahmoudi ◽  
I. Mahouachi ◽  
M. Boulare ◽  
M. Hassouna

The aim of this research was to investigate the effect of Aloe vera gel on the quality of probiotic lassi. Probiotic lassi was prepared by adding 15% of Aloe vera gel and inoculating with probiotic Lactobacillus fermentum strain. Results showed that physicochemical properties of fortified probiotic lassi were not affected by these modifications during the storage period (P>0.05), however, antioxidant activities, texture and aroma sensory parameters differed significantly (P<0.05). Lactobacillus and Streptococcus counts exhibited same behavior in Aloe vera probiotic lassi products as in control (P>0.05) after 21 days of storage. Aloe vera probiotic lassi has a beneficial effect on human health.

2019 ◽  
Vol 15 (8) ◽  
Author(s):  
Guolin Li ◽  
Xiuyan Zheng ◽  
Daomei Huang ◽  
Xi Chen ◽  
Fanbo Meng ◽  
...  

Abstractγ-Irradiation is applied to many agricultural products as a method for quality control. This study investigated the influence of γ-irradiation on physicochemical properties of adlay. Adlay samples were treated with 0 to 4.0 kGy 60Co γ-irradiation and subsequently stored at cool temperature (8 to 10 °C). Hardness of all treatment groups showed no marked changes at 0 kGy but exhibited variations at 2.0 and 4.0 kGy. Linoleic acid (C18:2) was the most sensitive to irradiation among 11 fatty-acid compositions. Saturated fatty-acid (SFA) content was increased, whereas unsaturated fatty acid was reduced by dose augmentation. Types of volatile compound increased from 15 to 21, and the major compound n-hexanol was increased by 80.41 % after 4-kGy irradiation. Odor changes caused by doses of irradiation were more remarkable than those caused by 12 months of storage. Hence, we conclude that 1.0 kGy irradiation barely affects physicochemical properties during storage; it could be an alternative way to control quality of adlay during storage.


LWT ◽  
2016 ◽  
Vol 74 ◽  
pp. 378-386 ◽  
Author(s):  
R. Minjares-Fuentes ◽  
A. Femenia ◽  
F. Comas-Serra ◽  
C. Rosselló ◽  
V.M. Rodríguez-González ◽  
...  

2016 ◽  
Vol 4 (1) ◽  
pp. 21
Author(s):  
Olusola Oluwole ◽  
Oluwole David ◽  
Christopher Falegan ◽  
Biodun Awojuyigbe ◽  
Olatunji Olajide

<p>Microbial and physicochemical properties of seven branded, seal tampered refrigerated fruit juices were carried out in this study using standard methods. Coliform counts ranged from 2.079 to3.093 log<sub>10</sub>cfu/ml over the storage period with pineapple juice and citrus juice having the highest and least coliform count respectively. Total bacteria count in the juice ranged from 7.009 to 8.243 log<sub>10</sub>cfu/ml. Citrus fruit juice however had the highest staphylococcal count while pineapple juice had the least (2.344 to 3.881log<sub>10</sub>cfu/ml). Also, osmophilic yeast count ranged from 2.017 to 3.903log<sub>10</sub>cfu/ml, having the highest load in orange fruit juice and lowest load in citrus fruit juice. The pH of the juice samples ranged from 2.9 to 4.2 during the period of refrigeration. Conductivity was highest in apple fruit juice and lowest in orange nectar pulp fruit juice. The total dissolved solids ranged from 0.29 to 1.95 over storage and was recorded highest in apple juice and lowest in orange nectar pulp fruit juice. Turbidity ranged from 5.8-200. These results indicate a reduction in the quality of fruit juices after 5 days of opening and thus reveals that both spoilage and pathogenic organisms could proliferate in juices despite refrigeration.</p>


2020 ◽  
Vol 24 (107) ◽  
pp. 41-47
Author(s):  
Cyntia Erazo Solórzano ◽  
Diana Salazar Daza ◽  
Jaime Vera Chang ◽  
Diego Tuárez García

El objetivo de esta investigación fue evaluar la conservación de la papaya con aplicación de bacterias ácidos lácticas provenientes del mucilago de cacao, se utilizaron diferentes porcentajes de aplicación (0, 5, 10 %) por aspersión a temperatura ambiente 35°C, se valoró el cambio en las características físicas, químicas, y microbiológicas en un lapso de 14 días, el peso de la papaya fluctuó entre 1 – 1.4 kg, considerando una madurez de cosecha. Se realizó un Diseño Completamente al Azar (DCA) con arreglo bifactorial AxB, para la comparación de medias de los tratamientos a estudiar se utilizó la prueba de rangos de Tukey al 5%. Las variables evaluadas (pH, pérdida de peso, acidez) dio como resultado que el tratamiento T9 (10% BAL; 14 Días) fue el que mantuvo mejores propiedades de almacenamiento transcurrido el tiempo de 14 días de conservación, el color de la fruta se mantuvo en niveles adecuados. Palabras Clave: características sensoriales, frutas frescas, procesamiento de frutas, tiempo de vida útil. Referencias [1]Organización de las Naciones Unidas para la Agricultura y la Alimentación FAO, “Procesamiento de frutas y verduras,” Roma, 2014. [2]E. Rodríguez-Sauceda, “Uso de agentes antimicrobianos naturales en la conservación de frutas y hortalizas,” Ra Ximhai, vol. 7, pp. 153–170, 2011, doi: 10.35197/rx.07.01.2011.14.er. [3]R. Raybaudi-Massilia, R. Soliva, y O. Martín, “Simposio Iberoamericano de Hortalizas Frescas , 1 / Congreso Nacional de Procesamiento Mínimo de Frutas y Hortalizas , 4 ( 2006 ),” 2006. [4]M. Valle, “Aplicación de recubrimientos comestibles para mantener la calidad de frutillas congeladas,” p. 211, 2012. [5]A. Garcia Figueroa, A. Ayala-Aponte, y M. I. Sánchez-Tamayo, “Efecto de recubrimientos comestibles de Aloe vera y alginato de sodio sobre la calidad poscosecha de fresa,” Rev. U.D.C.A Actual. Divulg. Científica, vol. 22, no. 2, 2019, doi: 10.31910/rudca.v22.n2.2019.1320. [6]K. Córdova y A. Loor, “Prolongación de la vida útil de la papaya ( Carica papaya ) en percha por inmersión en soluciones de propóleo en etanol,” 2014. [7]I. M. Brasil, C. Gomes, A. Puerta-Gomez, M. E. Castell-Perez, y R. G. Moreira, “Polysaccharide-based multilayered antimicrobial edible coating enhances quality of fresh-cut papaya,” LWT - Food Sci. Technol., vol. 47, no. 1, pp. 39–45, 2012, doi: 10.1016/j.lwt.2012.01.005. [8]Z. Kalvatchev, D. Garzaro, y F. Guerra Cedezo, “Theobroma cacao L.: Un nuevo enfoque para nutrición y salud,” Rev. Agroaliment., vol. 4, no. 6, pp. 23–25,1998. [9]S. Vasquez, H. Suárez, y S. Zapata, “Utilización de sustancias antimicrobianas producidas por bacterias acido lácticas en la conservación de la carne,” Rev. Chil. Nutr., vol. 36, no. 1, pp. 64–71, 2009, doi: 10.1097/PHH.0000000000000678. [10]R. Rivera-Rebollar, S. Cabrera-Calderón, A. Lira-Vargas, M. Trejo-Márquez, y S. Pascual-Bustamante, “Efecto de recubrimiento de carboximetilcelulosaadicionado con extracto de epazote en el control de hongos postcosecha de papaya, jitomate y chile,” Investig. y Desarro. en Cienc. y Tecnol. Aliment., vol.1, no. 2, pp. 379–384, 2016. [11]A. Sañudo, J. Siller, T. Osuna, D. Muy, G. López, y J. Labavitch, “Control de la maduración en frutos de papaya (Carica papaya L.) con 1-metilciclopropenoy ácido 2- cloroetil fosfónico,” Rev. Fitotec. Mex., vol. 31, no. 2, pp. 141–147, 2008. [12]A. Almeida-Castro, J. Reis-Pimentel, D. Santos-Souza, y T. Vieira, “Estudio de la conservación de la papaya (Carica papaya L.) asociado a la aplicación de películas comestibles,” Rev. Venez. Cienc. y Tecnol. Aliment., vol. 2, no. 1, pp. 49–060, 2011. [13]A. Jimenes-Trujillo, “Recubrimiento Comestible a Base de Aloe Vera (Aloe barbadensis miller) para Papaya (Carica papaya) Y Guayaba (Psidium guajava)Como Alternativa de Alimentos de IV Gama,” Universidad Técnica del Norte, 2017. [14]Instituto Ecuatoriano de Normalización, “NTE INEN-ISO 750:2013 Productos Vegetales y de Frutas - Determinación de la Acidez Titulable (IDT),” 2013. [15]Instituto Ecuatoriano de Normalización., “NTE INEN 1756. Frutas Frescas. Papaya. Requisitos,” Ecuador, 1990. [16]A. International, “AOAC: Official Methods of Analysis.”. [17]Instituto Ecuatoriano de Normalización, “Norma Técnica Ecuatoriana NTE INEN-ISO 2173:2013,” 2013. [18]A. Miranda, A. Alvis, y G. Arrazola, “Efectos de dos recubrimientos sobre la calidad de la papaya (Carica papaya) variedad tainung,” Temas Agrar., vol. 19,no. 1, pp. 7–18, 2014. [19]L. Konda et al., “InfluêncIa da atmosfera modIfIcada por fIlmes plástIcos sobre a qualIdade do mamão armazenado sob refrIgeração 1,” 2006. [20]A. Castricini, “Aplicação de Revestimentos Comestíveis para Conservação de Mamões (Carica papaya L.) ‘Golden,’” UNIVERSIDADE FEDERAL RURALDO RIO DE JANEIRO, 2009. [21]M. Mata, M. del C. Vásquez, N. Higinio, y D.Hernandéz, “Estudio comparativo de bio-recubrimientos a partir de Manihot esculenta y Phaseolus vulgarisempleadas como recubrimiento en uvas moradas,” Rev. Ciencias Ambient. y Recur. Nat., vol. 2, no. 5, pp. 11–25, 2016. [22]M. Maskan, “Microwave/air and microwave finish drying of banana,” J. Food Eng., vol. 44, no. 2, pp. 71–78, 2000, doi: 10.1016/S0260-8774(99)00167-3. [23]R. Torres, E. Montes, O. Pérez, y R. Andrade,“Relación del color y del estado de madurez con las propiedades fisicoquímicas de frutas tropicales,” Inf. Tecnológica, vol. 24, no. 3, pp. 51–56, 2013, doi: 10.4067/S0718-07642013000300007.  


2020 ◽  
Vol 122 (11) ◽  
pp. 3419-3432
Author(s):  
Mpho Edward Mashau ◽  
Afam Israel Obiefuna Jideani ◽  
Lucy Lynn Maliwichi

PurposeThe purpose of this paper is to determine the effect of adding Aloe vera powder (AVP) in the production of mahewu with the aim of determining its shelf-life and sensory qualities.Design/methodology/approachMahewu was produced at home (Sample B) and in the laboratory (Sample C) using a standard home-made procedure with the addition of AVP. A control mahewu (Sample A) was produced without AVP. Shelf-life was determined by following the chemical, microbiological, physical properties at 36 ± 2 °C for 60 days and the sensory properties of the products were also evaluated.FindingsPhysicochemical analysis revealed decreases in pH ranging between 3.3 and 2.4 from day 15–60 days of storage in all three samples. There was a significant increase (p < 0.05) in titratable acidity (0.2–1.8%) of all mahewu samples during storage. Total soluble solids were different amongst the samples from day 15 to day 60. The colour of the products was significantly different (p = 0.05) with respect to L*, a* and b* throughout the storage period. Microbiological results revealed an increase in coliforms bacteria, lactic acid bacteria, and yeast during storage. Sensory analysis showed that the control mahewu was more preferred than AVP added mahewu.Practical implicationsThe study may help small-scale brewers to increase the shelf-life of mahewu.Originality/valueResults of this study showed that the addition of AVP extended shelf-life of mahewu up to 15 days at 36 ± 2 °C.


2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Hassan Laaroussi ◽  
Toufik Bouddine ◽  
Meryem Bakour ◽  
Driss Ousaaid ◽  
Badiaa Lyoussi

Monofloral honeys (Bupleurum Spinosum) collected from different geographical locations of Moroccan Middle Atlas were evaluated for various potential attributes. For physicochemical parameters, the results showed the following values: pH (4.02–4.81); free acidity (12.16–31.85 mEq/kg); lactonic acidity (4.98–14.14 mEq/kg); total acidity (18.37–45.53 mEq/kg); moisture (15.81–19.20%); ash (0.21–0.55); electrical conductivity (427.38–682.16 mS/cm); diastasic activity (10.76–26.01); TSS (80.40–84.20%); melanoidins (0.21–1.15), and Pfund scale (30.47–175.53 mm). Potassium was the most important mineral among the tent evaluated elements, followed by sodium and calcium. All tested samples have high antioxidant activities and correlate with phenols, flavonoids, and ascorbic acid content. In regards to safety (sulfite-reducing clostridia and Salmonella spp.) and sanitary quality (faecal coliforms), all honey samples were negative. In addition, low counts of yeast and molds were detected, and the values of total aerobic mesophilic bacteria and Bacillus Sp. confirm the good quality of honey. The outcome of this study showed that all samples have good physicochemical properties, high antioxidant activities, and acceptable microbiological state, respecting the quality control criteria set by the international norms.


2015 ◽  
Vol 45 (1) ◽  
pp. 54-67 ◽  
Author(s):  
Z. F. Bhat ◽  
Sunil Kumar ◽  
Pavan Kumar

Purpose – The purpose of this study was to explore the potential of Aloe vera as a novel source of natural antioxidant and preservative in the muscle foods and to evaluate the effect of Aloe vera on the storage quality of aerobically packaged chicken nuggets. Design/methodology/approach – The Aloe vera pulp was incorporated at various levels, namely, 0, 5, 10 and 15 per cent, replacing lean meat in the formulation. The products were analyzed for proximate composition, physicochemical and sensory parameters. Chicken nuggets incorporated with optimum level of Aloe vera (10 per cent) along with control nuggets (0 per cent Aloe vera) were aerobically packaged and assessed for lipid oxidation, physicochemical and microbiological characteristics under refrigerated (4°C) conditions. Findings – pH, crude protein, ether extract and ash content of the nuggets showed significant (p < 0.05) decreasing trend with increasing levels of Aloe vera; however, there was a significant (p < 0.05) increase in the moisture content, emulsion stability and cooking yield. Aloe vera-enriched nuggets showed significantly (p < 0.05) lower values than control nuggets for almost all the lipid oxidation and microbiological parameters, i.e. free fatty acid, thiobarbituric acid-reactive substances value, total plate count, psychrophillic count and yeast and mould count. No significant (p > 0.05) difference was observed in the sensory parameters of the Aloe vera-enriched nuggets and the control samples throughout the period of storage. Originality/value – The paper has demonstrated the use of Aloe vera as a potential natural antioxidant without any marginal decline in the sensorial characteristics and nutritive value of the muscle foods.


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