Post-Drying Fissure Developments in Rough Rice

Sharma, A. D.; Kunze, O. R.

doi:10.13031/2013.33556

Cited by 66 publications

(2 citation statements)

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“…Rice cracking refers to the development of fissures in rice kernels. Because many scholars have observed these fissures occur after rapid drying [18,19], crack determination was uniformly conducted following sealed storage of the dried rice for 48 h. To determine the most accurate percentage of rice cracking, a sample of 300 grains was randomly selected and manually shelled before being placed on a lamp for observation. Then, a magnifying glass was used to meticulously document the quantity of cracked rice grains.…”

Section: Additional Crack Percentagementioning

confidence: 99%

Investigation of a Precise Control Scheme for Rice Quality

et al. 2023

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Rice drying is a complex and nonlinear process, with product quality being easily influenced by numerous factors. This study aimed to investigate the characteristics causing variation in rice quality and provide novel insights for regulating and controlling rice drying operations. To this end, response surface methodology was employed to examine the hot air drying of rice. The study was centered on investigating the impact of different levels of drying temperature (35–55 °C), relative humidity (30–50%), initial moisture content (20–28%), air velocity (0.36–0.84 m/s), and tempering ratio (1–4) on the process. The measured parameters included the net drying time, total drying time, additional crack percentage, and head rice yield. The experimental data were analyzed using Design–Expert, and the results indicated that all the response quadratic polynomial models were statistically significant. All the linear terms had a significant impact on the response variables except for the impact of air velocity on head rice yield. Finally, process reference charts of actual drying operating conditions were established based on the regression models to provide a scientific reference for guiding the control of rice drying quality and integrating into intelligent grain drying control systems in the future.

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Section: Additional Crack Percentagementioning

confidence: 99%

Investigation of a Precise Control Scheme for Rice Quality

et al. 2023

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“…As this is not suitable for storage and preservation, it is necessary to resort to a drying process. However, if this operation is not carried out under controlled conditions, MC gradients (MCGs) are created in the kernels, which may cause fissures (Ban, 1971; Craufurd, 1963; Kunze, 1979; Nguyen & Kunze, 1984; Sarker & Kunze, 1996; Sharma & Kunze, 1982; Yang, Zhang, & Jia, 2005). In order to reduce the MCGs, rice is usually held between passes in a multiphase drying process.…”

Section: Introductionmentioning

confidence: 99%

Comparison of mathematical models to predict glass transition temperature of rice (cultivar IRGA 424) measured by dynamic mechanical analysis

Bertotto

Gastón

Batiller

et al. 2018

Food Science & Nutrition

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Dynamic mechanical analysis (DMA) was applied to measure the Tg of rice IRGA 424 at different moisture content values (9.3%–22.3% wet basis). To conduct temperature sweeps, the samples were heated at a rate of 2°C/min from 20 to 120°C keeping frequency to 1 Hz. Tg was measured both from the E″ peak temperature (Tgmidpoint) and from the tan (δ) peak temperature (Tgendset). Tgmidpoint and Tgendset increased from 31.8 to 86.6°C and 42.1 to 104.7°C, respectively, as moisture content decreased from 22.3 to 9.3%. Six models were tested for their ability to predict Tg as a function of the moisture content. As all residuals were normally distributed and homoskedastic, standard metrics were used to assess the fitted models. Goodness of fit by these models was established by comparing the coefficient of determination (R 2), standard error of the estimate (SEE), and mean relative deviation (MRD). The Gordon–Taylor linearized equation was the most accurate in predicting Tg. To predict Tg from the moisture content of the rice samples, a new expression was proposed. For the conditions considered in this work, the developed equation satisfactorily predicts the Tg of rice IRGA 424 without needing prior linearization.

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Impact of Drying on the Mechanical Properties and Crack Formation in Rice

Bonazzi¹,

Courtois²

2011

Modern Drying Technology

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Post-Drying Fissure Developments in Rough Rice

Cited by 66 publications

References 0 publications

Investigation of a Precise Control Scheme for Rice Quality

Investigation of a Precise Control Scheme for Rice Quality

Comparison of mathematical models to predict glass transition temperature of rice (cultivar IRGA 424) measured by dynamic mechanical analysis

Impact of Drying on the Mechanical Properties and Crack Formation in Rice

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