Ultrasonic Cutting of Foods

Schneider, Yvonne; Zahn, Susann; Rohm, Harald

doi:10.1007/978-1-4419-7472-3_9

Cited by 7 publications

(9 citation statements)

References 46 publications

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“…Cutting or size reduction with an ultrasonic knife is a new method that has drawn increasing attention from the food industry due to its significantly improved cutting quality. In an ultrasonic cutting operation, the reciprocal vibration of a cutting knife at ultrasonic frequency greatly reduces friction between the blade and the product, resulting in straight and clean cuts and products with uniform size, shape, and density (Schneider, Zahn, & Rohm, ). Current industrial applications of ultrasonic cutting are mainly in the area of bakery and dairy products.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Cutting as a New Method to Produce Fresh‐Cut Red Delicious and Golden Delicious Apples

Yıldız

Palma

Feng

2019

Journal of Food Science

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The fresh-cut or sliced apple market has grown rapidly in recent years due to consumers' demand for fresh, convenient, and nutritious foods. Fresh-cut apples also contributed to increased consumption of fruits among school children. However, not many studies have investigated means to improve the quality of fresh-cut apples. In this study, we explored the use of ultrasound as a new method to cut apples and examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound. Both apple types were cut without (control) and with ultrasound at four amplitudes (0%, 30%, 40%, and 50%) with an ultrasonic knife. Quality attributes, for example, color, pH, polyphenol oxidase (PPO) activity, surface morphology, and sensory characteristics (color, odor, overall acceptability, and off-odor) of the apples right after cutting and during a 2-week storage at refrigeration temperature were compared. With the set up used in this study, both apples cut with ultrasound exhibited a relatively dense and smooth surface morphology with less cell damage compared with the relatively rough surface and more cells damage in the control. An improvement in quality attributes was observed when the ultrasound amplitude was increased from 30% to 50%. The apples cut with ultrasound had a lower PPO activity compared to the control, indicating less browning. In visual quality evaluation, panelists showed higher liking of the apples cut with ultrasound. The ultrasound-assisted cutting has showed promise for producing fresh-cut apples with improved quality, and may be used as an alternative to traditional cutting method.Practical Application: Fresh-cut produce has gained popularity in recent years due to its health benefits. Traditional methods to produce fresh produce use a static stainless steel blade to cut fruits or vegetables, causing chemical or visual quality issues. This study proposed a new method using a blade that vibrates at ultrasonic frequency to cut apples. The results have shown an improvement in the quality of fresh-cut apples. This method may provide a new solution for producing fresh-cut produce to better meet the requirement of consumers for quality products.

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Section: Introductionmentioning

confidence: 99%

Ultrasonic Cutting as a New Method to Produce Fresh‐Cut Red Delicious and Golden Delicious Apples

Yıldız

Palma

Feng

2019

Journal of Food Science

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“…Schneider et al . () showed that cutting of food is used to separate semi‐solid or soft‐solid materials, such as bread, rye bread and cake. Before the performance of ultrasonic cutting of foods, we prepared different food products and an ultrasonic knife.…”

Section: Methodsmentioning

confidence: 99%

“…As a typical ultrasonic food cutting system, it includes four major components: a power supply, a transducer, a booster and a cutting tool (Schneider et al . ). The ultrasonic power supply (generator) is an electronic device that converts standard 50/60‐Hz alternating current voltage to a high frequency electrical energy.…”

Section: Introductionmentioning

confidence: 97%

“…Schneider et al . () concluded that ultrasonic cutting is especially suited for segmenting and scoring of cheese and bean curd, cakes, confectionary products and sweets, dough, pastry, meat or fish pies, frozen products, and convenience food and snacks. Yildiz () investigated the effect of ultrasonic cutting on the quality of two types of products: a fatty product (cheese) sensitive to oxidation and a porous colloidal product (apple) sensitive to browning reaction during storage.…”

Section: Introductionmentioning

confidence: 99%

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Applications of Ultrasonic Cutting in Food Processing

Liu

Jia

et al. 2014

Journal of Food Processing and Preservation

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With regard to cutting materials, such as bread, rye bread and cake, a lot of methods can be applied. This paper studies the method of ultrasonic cutting in food processing. There are four major components in the typical ultrasonic food cutting system. They are the power supply, the transducer, the booster and the cutting tool. We not only focus on cutting in food processing through comparing the principle of ultrasonic cutting with conventional cutting, but also address practical applications of ultrasonic cutting in food processing through the performance of ultrasonic cutting of bread, rye bread and cake. The results show that ultrasonic cutting can be applied to cut thin slice of food, which the conventional cutting cannot do. Moreover, in order to extend practical applications of ultrasonic cutting in food processing, a novel kinematic mechanism is proposed to satisfy motions of ultrasonic cutting equipment. PRACTICAL APPLICATIONSTo evaluate ultrasonic cutting of foods, on the one hand, we have compared the principles of two methods, which are ultrasonic cutting of foods and conventional cutting of foods; on the other hand, we have investigated the performance of ultrasonic cutting of different materials, such as bread, rye bread and cake. The Results and Discussion section shows that ultrasonic cutting in the industry has not only general benefits and advantages, such as excellent cut surface, reduced crumbling, squeezing, debris and smearing, but also a special advantage, such as cutting thin slice, which cannot be realized by conventional cutting of foods. To extend applications of ultrasonic cutting in food processing, we have designed a novel kinematic mechanism of ultrasonic cutting equipment to demonstrate applications of ultrasonic cutting with intermittent motion.

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“…One key advantage of ultrasonic vibration assisted cutting as a hybrid process is allowing conventional cutting to be enhanced by creating an oscillating movement of the tool edge while cutting. It has been shown that ultrasonic vibration assisted cutting of food materials can reduce cutting forces [4] due to reduction in friction forces.…”

Section: Introductionmentioning

confidence: 99%

Friction effects between ultrasonic cutting blade and sheet stack

Deibel

Wegener

Boos

2012

2012 IEEE International Ultrasonics Symposium

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Abstract-Ultrasonic vibration assisted machining is known to reduce friction forces for various processes and materials. In this paper, the friction forces between an asymmetrical cutting blade and sheet stack for different cutting velocities are investigated. Materials used for the sheets are plain label paper and polyethylene terephthalate. The cutting blade operates at a resonant longitudinal mode, resulting in a discontinuous relative movement between blade surface and stack. Along the normal vector of the cutting edge, the friction force reduction changes with the amplitude of the longitudinal mode of the blade. It is shown that for low cutting velocities no friction force is visible, and at higher cutting velocities friction increases.

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Ultrasonic Cutting of Foods

Cited by 7 publications

References 46 publications

Ultrasonic Cutting as a New Method to Produce Fresh‐Cut Red Delicious and Golden Delicious Apples

Ultrasonic Cutting as a New Method to Produce Fresh‐Cut Red Delicious and Golden Delicious Apples

Applications of Ultrasonic Cutting in Food Processing

Friction effects between ultrasonic cutting blade and sheet stack

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