Design and development of compact Foxtail millet deshelling machine

Ullegaddi, Manjunath M.; Babu, C. Narendra; Faisal, Abdul Rahman; Mohammad, Miraz; Shreenidhi, M.S.; Anjum, Syeda

doi:10.1016/j.matpr.2020.11.314

Cited by 3 publications

(5 citation statements)

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“…They found that simple processing techniques, such as soaking and cooking, decreased polyphenols and phytate content, resulting in increased IVPD and improved availability of iron and zinc. Ullegaddi et al (2020) developed a small machine suitable for multiple millets, focusing on foxtail millet. The compact foxtail millet dehusking machine demonstrated satisfactory performance in tests.…”

Section: Millets Dehulling/pearlingmentioning

confidence: 99%

Review on millets dehulling and pearling technologies and machinery

Mittal,

Kumar,

Gupta

et al. 2024

J Food Process Engineering

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This paper presents a comprehensive analysis of recent advancements in the mechanization of millet processing technologies. In the last decade, many researchers have worked on millet postharvest processing technologies and developed many machines; however, there is a lack of collective information. The design, development, and performance aspects of millet threshing, dehulling/pearling, and cleaning are comprehensively reviewed and discussed in this review. Various studies are examined, which explore these machines' operational parameters and performance. The findings highlight the significant improvements in threshing and pearling efficiency, grain damage reduction, and ergonomic benefits in comparison to traditional manual methods. This comprehensive review of millet machinery helps to identify the research gap and establish a platform for optimum design and development for the future. Additionally, this helps to improve the level of mechanization in millet processing. The paper contributes valuable insights into improving postharvest processing methods for various millet varieties, thus aiding in promoting the utilization and commercialization of these nutritious and sustainable crops.Practical applicationsUnderstanding of engineering properties of millets for further development and improvement of available millet dehulling machinery. The knowledge of factors involved in millet dehulling and pearling helps in testing and evaluation of millet processing machinery. The comprehensive information about the millet machinery improve mechanization of the millet‐based industries.

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Section: Millets Dehulling/pearlingmentioning

confidence: 99%

Review on millets dehulling and pearling technologies and machinery

Mittal,

Kumar,

Gupta

et al. 2024

J Food Process Engineering

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“…There are scientific studies of mechanisms for cleaning millet, in which abrasive wheels are used to separate the grain from the husk [14]. Abrasive discs rotating at a certain speed are used as a working body.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Our review of the literature [9][10][11][12][13][14][15][16][17][18][19][20][21][22] established the absence of universal technical and technological solutions that would enable the efficiency of dehulling seeds with different physical and mechanical properties. That is, the dehulling of different types of seeds requires special approaches and technical solutions, which take into account differences in the unique properties of the seed (size, hardness of the shell, structure, etc.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Based on the analysis of [14][15][16][17][18][19][20][21][22], it was noted that centrifugal dehullers are the most promising mechanisms for dehulling industrial hemp seeds. The seeds in such devices acquire the necessary value of kinetic energy and fall with one targeted impact on the tray.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…According to the results of our review of the literature [12][13][14][15], it was noted that the humidity of both the seed coat and the kernel has a significant influence on the effectiveness of dehulling. Thus, an increase in seed moisture increased the moisture not only of seed coats but also of seed kernels.…”

Section: Fig 4 Geometric Dimensions Of Hemp Seedsmentioning

confidence: 99%

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Substantiating the rational parameters and operation modes for the hemp seed centrifugal dehuller

Sheichenko,

Petrachenko,

Koropchenko

et al. 2024

EEJET

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The object of research is technological processes, seeds of industrial hemp, and working bodies of the dehuller. A centrifugal-type device for crushing hemp seeds with a closed sector-type working body has been designed. Owing to this, the task related to seed dehulling was solved with a high level of efficiency in separating the seed coat from the kernel. The rational parameters for the dehuller have been substantiated: the diameter of the impeller is 162 mm, the gap between the impeller and the seed repelling panel is 80 mm, the frequency of rotation of the impeller is 2000 min–1. It was established that with the specified parameters and moisture content of the seeds within the limits of conditional (12.0–13.0 %), it is advisable to carry out dehulling process without preliminary separation of the seeds into fractions by width. It was established that an increase in seed size leads to a corresponding increase in the weight share of seed kernels. About 58.2 % of the main mass of seeds is the average fraction with a width of 2.5 to 3.0 mm. It was found that reducing the diameter of the impeller (from 236 mm to 162 mm) at a seed moisture content of 8.8 % improved the efficiency of dehulling. At a rotation frequency of the impeller of 2000 min–1, the highest total number of intact and destroyed kernels (23.23–29.33 %) was achieved for the two studied moistures. With an increase in seed moisture content from 8.8 % to 12.0 %, the number of dehulled kernels in the hempseed cake increased. It was noted that for seeds with a moisture content of 8.8 %, an increase in the gap led to a decrease in the dehulling efficiency for each of the three investigated seed fractions. The total number of dehulled kernels under such conditions decreased by 2.4–6.8 % and amounted to 16.4–26.9 %. For seeds with a moisture content of 12.0 %, an increase in the gap, on the contrary, increased the dehulling efficiency for each of the three investigated seed fractions. The total number of dehulled kernels for seeds of marked moisture increased within the range of 1.4–3.6 % and amounted to 27.4–31.0 %

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