Aroma compounds recovery of tropical fruit juice by pervaporation: membrane material selection and process evaluation

Extraction of tropical fruit juice using simple, efficient, and environmentally friendly technologies is gaining importance to produce high quality juices. Juice from pink-fleshed guava, pink-fleshed pomelo, and soursop was extracted using direct and indirect thermosonication methods by varying intensity, time, and temperature, and compared to those extracted using water bath incubation. Improvised models of juice yield, ascorbic acid, and total soluble solids responses were generated by eliminating insignificant model terms of the factors in full quadratic model using backward eliminating procedure. Main effects, 3D, or 4D plots for each response were developed based on factors that influenced the response. Results showed that the best extraction method for guava and pomelo juices were within indirect thermosonication method of 1 kW, 55 °C and 30 min, and 2.5 kW, 54 °C and 23 min, respectively. Direct thermosonication method at 10% amplitude, 55 °C for 2 to 10 min was more suitable for soursop juice. Thermosonicated extraction of tropical fruit juice can improve its juice yield, ascorbic acid content, and total soluble solids content.

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Capacitive micromachined ultrasonic transducers: Transmission evaluation with different membrane materials and dimensions

tm - Technisches Messen ◽

10.1515/teme-2020-0073 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Sudhanshu Tripathi ◽

Rekha Agarwal ◽

Rashmi Vashisth ◽

Devraj Singh

Keyword(s):

Resonant Frequency ◽

Material Selection ◽

Transmission Efficiency ◽

Ultrasonic Transducers ◽

Transduction Efficiency ◽

Membrane Material ◽

Structural Examination ◽

Membrane Materials ◽

Capacitive Micromachined Ultrasonic Transducers ◽

Output Pressure

Abstract Capacitive micromachined ultrasonic transducers (CMUTs) are dominant in generating and receiving acoustic signals. CMUT transmission efficiency solely depends upon the membrane material utilized. This work presents the structural examination of receiving and transmitting characteristics of CMUT with divergent membrane materials, namely Silicon (Si), Silicon Nitride ( Si 3 N 4 {\mathrm{Si}_{3}}{\text{N}_{4}} ), Indium Phosphide (InP), Zinc Oxide (ZnO), and Polysilicon (Poly-Si). The analysis includes the membrane deflection, pull-in voltage, output pressure, resonant frequency and capacitance modification with variable DC voltage. It has been found that InP gives the pull-in voltage comparable to Si in the receiving mode and have more transduction efficiency in transmitting mode. Effect of dimensions of CMUT on pull-in voltage and resonant frequency are also discussed. The major contribution lies in the analytical and estimation study of CMUT for appropriate membrane material selection meant for transmission and reception in the field of pressure sensing application.

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Tropical fruit juice: effect of thermal treatment and storage time on sensory and functional properties

Journal of Food Science and Technology ◽

10.1007/s13197-019-03987-0 ◽

2019 ◽

Vol 56 (12) ◽

pp. 5184-5193 ◽

Cited By ~ 4

Author(s):

Nédio Jair Wurlitzer ◽

Ana Paula Dionísio ◽

Janice Ribeiro Lima ◽

Deborah dos Santos Garruti ◽

Idila Maria da Silva Araújo ◽

...

Keyword(s):

Thermal Treatment ◽

Functional Properties ◽

Storage Time ◽

Fruit Juice ◽

Tropical Fruit ◽

And Storage

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Antiproliferative, antimutagenic and antioxidant activities of a Brazilian tropical fruit juice

LWT ◽

10.1016/j.lwt.2014.04.002 ◽

2014 ◽

Vol 59 (2) ◽

pp. 1319-1324 ◽

Cited By ~ 17

Author(s):

Luciano Bruno de Carvalho-Silva ◽

Ana Paula Dionísio ◽

Ana Carolina da Silva Pereira ◽

Nedio Jair Wurlitzer ◽

Edy Sousa de Brito ◽

...

Keyword(s):

Fruit Juice ◽

Antioxidant Activities ◽

Tropical Fruit

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Sugar-Tasting Ability and Fruit Selection in Tropical Fruit-Eating Birds

The Auk ◽

10.1093/auk/104.2.173 ◽

1987 ◽

Vol 104 (2) ◽

pp. 173-179 ◽

Cited By ~ 55

Author(s):

Douglas J. Levey

Keyword(s):

Plant Species ◽

Fruit Juice ◽

Fruit Juices ◽

Sugar Concentration ◽

Apparent Difference ◽

Tropical Fruit ◽

Handling Technique

Abstract The sugar-tasting abilities of four species of tanagers and two species of manakins were tested. Three tanager species were able to detect differences in diets containing 8%, 10%, and 12% sugar. In pairwise choice trials, they preferred the diet highest in sugar. Neither species of manakin discriminated among the three diets. This apparent difference in tasting abilities of tanagers and manakins may be a result of their fruit-handling techniques. Tanagers crush fruits in their bills, thereby releasing juices onto their tongues. Manakins swallow fruits whole; their tongues rarely encounter fruit juice. Hence, manakins' fruit-handling technique is poorly suited for sensing the taste cues in fruit juices. Variation in fruit sugar concentration is common within and among plant species and is great enough to be detected by birds. Birds probably have selected for sweeter fruits.

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Modeling of clarified tropical fruit juice deacidification by electrodialysis

Journal of Membrane Science ◽

10.1016/j.memsci.2008.10.034 ◽

2009 ◽

Vol 326 (2) ◽

pp. 472-483 ◽

Cited By ~ 23

Author(s):

Edwin Vera ◽

Jacqueline Sandeaux ◽

Françoise Persin ◽

Gérald Pourcelly ◽

Manuel Dornier ◽

...

Keyword(s):

Fruit Juice ◽

Tropical Fruit

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Neuroprotection of Tropical Fruit Juice Mixture via the Reduction of iNOS Expression and CRH Level in β-Amyloid-Induced Rats Model of Alzheimer’s Disease

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2020/5126457 ◽

2020 ◽

Vol 2020 ◽

pp. 1-11 ◽

Cited By ~ 1

Author(s):

Theng Choon Ooi ◽

Munirah Ahmad Munawar ◽

Nur Hasnieza Mohd Rosli ◽

Siti Nur Aqilah Abdul Malek ◽

Hanisah Rosli ◽

...

Keyword(s):

Locomotor Activity ◽

Fruit Juice ◽

Antioxidant Properties ◽

Inos Expression ◽

Male Rats ◽

Tropical Fruit ◽

Amyloid A ◽

Intracerebroventricular Infusion ◽

Model Of Alzheimer’S Disease ◽

Significant Difference

This study aimed to determine the effects of tropical fruit juice mixture (pomegranate, white guava, and Roselle) on biochemical, behavioral, and histopathological changes of β-amyloid- (Aβ-) induced rats. Formulation 8 (F8) of tropical fruit juice mixture was chosen for this present study due to its high phenolic content and antioxidant capacity. Forty Wistar male rats were divided into five groups: dPBS (sham-operated control), dAβ (Aβ control), JPBS (F8 and PBS), JAβ (F8 and Aβ), and IBFAβ (ibuprofen and Aβ). F8 (5 ml/kg BW), and ibuprofen (10 ml/kg BW) was given orally daily for four weeks before the intracerebroventricular infusion of Aβ for two weeks. Histological analysis and neuronal count of hippocampus tissue in the Cornu Ammonis (CA1) region showed that supplementation with F8 was able to prevent Aβ-induced tissue damage and neuronal shrinkage. However, no significant difference in locomotor activity and novel object recognition (NOR) percentage was detected among different groups at day 7 and day 14 following Aβ infusion. Only effect of time differences (main effect of day) was observed at day 7 as compared to day 14, where reduction in locomotor activity and NOR percentage was observed in all groups, with F (1, 7) = 6.940, p<0.05 and F (1, 7) = 7.152, p<0.05, respectively. Besides, the MDA level of the JAβ group was significantly lower (p<0.01) than that of the dPBS group. However, no significant changes in SOD activity were detected among different groups. Significant reduction in plasma CRH level (p<0.05) and iNOS expression (p<0.01) in the brain was detected in the JAβ group as compared to the dAβ group. Hence, our current findings suggest that the tropical fruit juice mixture (F8) has the potential to protect the rats from Aβ-induced neurotoxicity in brain hippocampus tissue possibly via its antioxidant properties and the suppression of iNOS expression and CRH production.

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