Physico‐mechanical properties of unripe grape berries relevant in the design of juicing machine

Mirzabe, Amir Hossein; Hajiahmad, Ali

doi:10.1111/jfpe.13859

Cited by 5 publications

(5 citation statements)

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“…(wet basis), the initial porosity of the unripe grape fruits is 27.5% (Mirzabe & Hajiahmad, 2021). Obtained results showed that the final moisture content of pomace was in the range of 73.42 and 85.70% (wet basis).…”

Section: Discussionsmentioning

confidence: 92%

“…The initial moisture content of the berries ranged from 91.89% to 92.31%. For the Askari variety, when the moisture content is equal to 92% (wet basis), the initial porosity of the unripe grape fruits is 27.5% (Mirzabe & Hajiahmad, 2021). Obtained results showed that the final moisture content of pomace was in the range of 73.42 and 85.70% (wet basis).…”

Section: Discussionmentioning

confidence: 99%

“…The bulk density of the berries was measured for each sample and ranged from 770.25 to 787.77 kg.m −3 for 3 days of testing. Considering the moisture content of the unripe grape berries of Askari variety equal to 94.57% (wet basis), the average length, width, thickness, volume, and projected area have been reported 17.79 mm, 13.30 mm, 13.05 mm, 1.71 cm 3 , and 1.70 cm 2 , respectively (Mirzabe & Hajiahmad, 2021).…”

Section: Moisture Content and Bulk Density Of The Fresh Berriesmentioning

confidence: 99%

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Utilization of the basket press method to extract verjuice

Hajiahmad

Mirzabe

2022

Food Processing Preservation

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In this study, two cylinders were used as the main part of the basket press. Berries were poured into the cylinders and were subjected to compression force. Loading rate, layer height, number of layers, and cylinder diameter were considered operating factors. Force–deformation data were recorded. At the end of each test, the mass of extracted juice was measured. Extraction Yield of Juice (YOP), pomace density, Specific Absorbed Energy by Berries (SAEB), and Efficiency Index of Energy (EIE) were output variables. Analysis of variance and optimization were performed. The operating parameters on YOP and SAEB were effective at a significance level of p‐value < .01. Moreover, the EIE was significant under the effect of all inputs at 5%. YOP and SAEB ranged from 23.42 to 43.10% and 192.23 to 255 J kg−1, respectively, for basket 1. The corresponding values for basket 2 were 11.07 to 27.81% and 53.53 to 84.01 J kg−1, respectively. Novelty impact statement The basket press method helps to maintain the quality of the juice because by applying the controlled pressure, the bitter seeds of the unripe grape berries can be prevented from being crushed and the bitterness transferred to the juice. The pressure on the berries was increased to the point that the quality of the extracted verjuice did not decrease. Effects of loading rate, layer height, and the number of layers are significant on the performance and efficiency of the method.

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Section: Discussionsmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Moisture Content and Bulk Density Of The Fresh Berriesmentioning

confidence: 99%

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Utilization of the basket press method to extract verjuice

Hajiahmad

Mirzabe

2022

Food Processing Preservation

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“…At the same time, Yilmaz et al (2009) came to the same conclusion in a similar study conducted using sesame seeds. When analysing the physical and mechanical properties of unripe green grapes, Mirzabe and Hajiahmad (2021) found a correlation between the Poisson's ratio and the plant breaking force and firmness. When the Poisson's ratio gradually increased in the range of 0.4-0.48, the breaking force and hardness of the grapes gradually decreased.…”

Section: Discussionmentioning

confidence: 99%

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Li¹,

Li²,

Lin³

et al. 2023

Int. Agrophys.

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The mechanization of the whole process of sugarcane harvesting is an integral part of reducing the cost of sugarcane production. In order to select sugarcane strains suitable for mechanized harvesting, in this experiment, a dynamic resistance strain gauge and other equipment determined the related mechanical property parameters such as density, elastic modulus, and Poisson's ratio of different sugarcane varieties. Ansys/ explicit dynamics were used to establish a finite element model of the disc cutting device and to simulate the forces exerted on the stalk during sugarcane harvesting and also the quality of the cut section. Then, after obtaining the regression equation analysis and the response surface through the cross-section mass, the field harvesting experiment verifies the simulation results. The results show that the density, elastic modulus, and Poisson's ratio significantly affect the cutting quality within the three types of mechanical parameters. Through response surface analysis, when the elastic modulus is 92 MPa, the density is 1145 kg m -3 , the Poisson's ratio is 0.404, the best cutting quality was obtained, and the section flatness is 57.09%. According to the cross-sectional regression equation, the calculation results are as follows: Liucheng 05-136 > Yuetang 94-128 > Guitang 42, which is the same as the actual harvest quality results under the two planting modes. This indicated that the difference in the mechanical properties of the sugarcane would significantly affect the quality of mechanical harvesting, which provides a reference direction for selecting sugarcane varieties suitable for mechanized harvesting.K e y w o r d s: elastic modulus, Poisson's ratio, mechanized harvesting, finite element

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“…Cooking methods, such as blanching, have also been compared with juicing effects on flavonoids and tannin content in leafy greens [13]. Physico-mechanical properties (dimensional, gravimetrical, frictional, and aerodynamic) are critical to the design of juicing machines [14]. Steam juicer juicing methods had been used in juice extraction and preservation, and are demonstrated to maintain juice microbiological stability, although it may also alter phytochemical compounds and antioxidant capacity [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Haskap Juicing Method Effects on Haskap Juice Quality

Wang,

Svyantek,

Miller

et al. 2023

Applied Sciences

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This research is the first study on the influence of juicing methods on the ‘Aurora’ haskap juice quality. Three common juice extraction methods, namely, using a steam juicer, a centrifugal juicer, and a bladder wine press, were applied for haskap juice extraction. Both physicochemical assays and tests of antioxidant activities were employed to evaluate the qualities of the haskap juice. Generally, the centrifugal juicer increased and the steam juicer reduced concentrations of measured juice components relative to the press. The juice from the centrifugal juicer had the highest cloudiness. Sugar concentrations were about 40% lower in steam juice compared to the centrifugal juicer. Pressed juice had a slightly lower soluble solid content than the juice made with the centrifugal juicer and concentrations of glucose and fructose were similar between these methods. The methods altered pH and malic acid content without affecting the concentrations of tartaric and malic acids. Similar effects of juicing methods were seen in secondary compounds associated with health benefits and antioxidant capacities. Anthocyanin concentrations in press and centrifugal juicer extracts were similar, about 1.6 times higher than steam juicer extracts. Total phenolics and antioxidant activities were from two to four times higher in the centrifugal juicer extraction compared to steam juicing. Ascorbic acid and total flavonoid content in the haskap juice was increased by centrifugal juicing and decreased by steam juicing compared to the press. Overall, the juice extracted with the centrifugal juicer had concentrations of juice components that were 1.5–2 times higher than the steam juicer. The pressed juice had similar to slightly lower concentrations of components compared to the centrifugal juicer.

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Physico‐mechanical properties of unripe grape berries relevant in the design of juicing machine

Cited by 5 publications

References 87 publications

Utilization of the basket press method to extract verjuice

Utilization of the basket press method to extract verjuice

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Haskap Juicing Method Effects on Haskap Juice Quality

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