Dehulling Characteristics of Flaxseed

Oomah, B. Dave; Mazza, G.; Kenaschuk, E. O.

doi:10.1006/fstl.1996.0036

Cited by 43 publications

(40 citation statements)

References 16 publications

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“…Linola, on the other hand, had the lowest concentration of cyanogenic compounds in the seed and the lowest amount of hull removed, but had the highest changes in cyanogenic compounds upon dehulling. Comparison of data in Table 4 with dehulling characteristics of flaxseed cultivars reported earlier (12) indicates that often cultivars with high concentrations of cyanogenic compounds are those associated with high dehulling charac- teristics, namely percent hull removed. However, multicomparison analysis (data not shown) showed nonsignificant correlation between the two characteristics.…”

Section: Resultsmentioning

confidence: 78%

“…Because of the tangential rotation of the disk with respect to the grain kernels, this unit is called a tangential abrasive dehulling device. Flaxseeds were dehulled as described previously (12). Briefly, flaxseed (five replicates of 40 g), dried to a moisture content of 20 to 35 g/kg, was stored for 24 h and dehulled in the TADD at a speed of 2000 rpm for 25 s. The dehulled seed and hulls were separated by air aspiration.…”

Section: Dehullingmentioning

confidence: 99%

“…Abrasive dehulling also reduced canola meal fibre content from 95 to 75 g/kg (11). In a previous study (12), the Tangential Abrasive Dehulling Devise (TADD) was used to dehull flaxseed cultivars varying widely in seed characteristics. The effects of dehulling on the chemical composition and physical properties of these flaxseed cultivars is the subject of this investigation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Dehulling on Chemical Composition and Physical Properties of Flaxseed

Oomah

Mazza

1997

LWT - Food Science and Technology

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Section: Resultsmentioning

confidence: 78%

Section: Dehullingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Dehulling on Chemical Composition and Physical Properties of Flaxseed

Oomah

Mazza

1997

LWT - Food Science and Technology

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“…Lawton and Faubion (1989) used TADD to measure kernel hardness in sorghum, wheat and corn. Oomah et al (1996) used the TADD process of dehulling of flaxseed and reported that best dehulling was achieved when moisture content was reduced to 35-20 g/kg and stored for at least 24 h and dehulled at a speed of 2000 rpm for 25 sec. Some works on dehulling of flaxseeds are reported in literature (Oomah et al 1996;Mazza 1997, 1998;Madhusudhan et al 2000;Zhang et al 2009).…”

Section: Residence Timementioning

confidence: 99%

“…Abrasive dehulling is a front-end method to remove the outer layers of flaxseed (Oomah et al 1996). A novel, multi-sample, tangential abrasive dehulling device (TADD) was designed and tested by Oomah et al (1981).…”

Section: Residence Timementioning

confidence: 99%

Effect of moisture content and residence time on dehulling of flaxseed

et al. 2010

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Effects of moisture content and residence time on various dehulling parameters of flaxseed including yield, hull, hullability, extraction rate and embryo (dehulled flaxseed) recovery were studied. A laboratory model rice polisher/ dehulling machine and a laboratory model aspirator were used for dehulling and aspiration (hull separation), respectively. The dehulling experiments were carried out for moisture contents ranging from 1.9 to 7.8% wb and residence times from 20 to 50 sec in dehulling machine at 2000 rpm of abrasive disc (rotor) of the polisher. Both moisture content and residence time played an important role in dehulling of flaxseed. The optimum moisture range and residence time for dehulling of flaxseed were 1.9 to 4.5% wb and 40 sec, respectively.

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Hydrothermal treatment of hemp seeds (Cannabis sativa L.): impact on its dehulling yield, fatty acid profile and nutritional characteristics

et al. 2022

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BACKGROUND: Hemp seeds are highly nutritious and a sustainable source of protein and omega-fatty acids. The outer shell of the seeds restricts its utilization in the food industry. Dehulling of the seeds leads to a lot of processing losses due to high oil content and hard shell of the seed. Therefore, in the present study, hydrothermal treatment of the hemp seeds (Cannabis sativa L.) before dehulling was proposed to reduce the endosperm breakage and improve dehulling yield of seeds.RESULT: The hemp seeds were subjected to four types of treatments, namely moisture addition (at 14%) with tempering for 10 min and 60 min followed by drying (28-30 °C) and steaming at atmospheric pressure for 5 min and 10 min. Results from the study showed that the hydrothermal treatments impacted the hardness of the endosperm and therefore improved the dehulling yield by 1.3 to 1.5 folds. Also, the dehulling losses significantly reduced from 26.80% to 9.52% after the steaming treatments. Though steaming to some extent affected the colour of the dehulled seeds compared to other treatments, it showed an increment in protein digestibility from 86.53% to 88.73%.CONCLUSION: Among all the hydrothermal treatments, steaming showed significant improvement in the yield of dehulled hemp seeds. It reduced endosperm breakage without affecting the seeds' fatty acid profile and nutritional quality. It can be concluded that steaming as a pretreatment can be used for improved dehulling of hemp seeds, aiding the better valourization of hemp seeds in the food industry.

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Dehulling Characteristics of Flaxseed

Cited by 43 publications

References 16 publications

Effect of Dehulling on Chemical Composition and Physical Properties of Flaxseed

Effect of Dehulling on Chemical Composition and Physical Properties of Flaxseed

Effect of moisture content and residence time on dehulling of flaxseed

Hydrothermal treatment of hemp seeds (Cannabis sativa L.): impact on its dehulling yield, fatty acid profile and nutritional characteristics

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