EFFECT OF PARTICLE SIZE AND HEAT ON ABSORPTIVE PROPERTIES OF SOY HULLS<sup>1,</sup><sup>2</sup>

Muzilla, M.; Unklesbay, Nan; Helsel, Zane R.; Unklesbay, K.; Ellersieck, Mark R.

doi:10.1111/j.1745-4557.1989.tb00331.x

Cited by 8 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Soluble fiber, which acts via chemical means, can improve glucose tolerance and nutrient digestibility. Because 2.4 million tons of soybean hulls per year are produced by U.S. soy-processing plants, they are readily available and economical to use (Muzilla et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Soybean hulls as a dietary fiber source for dogs.

Cole

Fahey

Merchen

et al. 1999

Journal of Animal Science

View full text Add to dashboard Cite

In Exp. 1, soybean hull samples were obtained from nine sources across the United States and analyzed for nutrient content to determine their suitability for inclusion in dog diets. Compositional data revealed variation in both the amount of total dietary fiber (TDF; 63.8 to 81.2%) in the soybean hulls and the ratio of insoluble:soluble fiber (5.0:1 to 15.4:1). Crude protein content varied widely among sources, ranging from 9.2 to 18.7%. An in vivo trial (Exp. 2) was conducted using a premium dog diet containing 3.0, 4.5, 6.0, 7.5, or 9.0% soybean hulls (DM basis). There was a negative linear effect (P < .05) of soybean hull inclusion in the diet on DM, OM, TDF, and GE total-tract digestibilities, as well as on calculated ME. Crude protein and fat digestibilities were unaffected by treatment. Based on these results, ileally cannulated dogs were fed diets containing 6.0, 7.5, or 9.0% soybean hulls (DM basis) in addition to diets containing either 0% supplemental fiber or 7.5% beet pulp (Exp. 3). Nutrient digestion at the ileum was unaffected by inclusion of supplemental fiber. Total tract digestion of DM, OM, and GE was lower ( P < .05) for diets containing supplemental fiber when compared with the diet containing 0% fiber. Crude protein and fat digestibilities were unaffected by treatment. There was no difference in nutrient digestibility between those diets containing soybean hulls and a diet containing beet pulp. Soybean hull inclusion in the diet resulted in a negative linear effect (P < .05) on calculated ME, in addition to lowering ME (P < .05) when compared with the 0% fiber control diet. Calculated ME for dogs fed a 7.5% beet pulp-containing diet was lower (P < .05) than that for dogs fed the soybean hull-containing diets. Results indicate that soybean hulls can be an effective dietary fiber source in dog diets.

show abstract

Section: Introductionmentioning

confidence: 99%

Soybean hulls as a dietary fiber source for dogs.

Cole

Fahey

Merchen

et al. 1999

Journal of Animal Science

View full text Add to dashboard Cite

show abstract

“…Other potential commercial applications for hulls include carbonization to form adsorbents for bleaching soybean oil (proctor and Harris 1996; Gnanasambandam and Proctor 1997) and chemical modification to convert the hulls into a cation exchange medium (Marshall et al 2001). Food-related studies on hulls include their use as an iron source for bread enrichment (Johnson et al 1985), metal binding as a model of insoluble dietary fiber (Laszlo 1987), plus water and lipid absorption properties in structured pork products (Muzilla et al 1989).…”

mentioning

confidence: 99%

Air Classification of Pin‐Milled Soybean Hulls

Wolf¹,

Sessa

et al. 2002

Cereal Chem

View full text Add to dashboard Cite

Commercial soybean hulls (14.6% crude protein) were pin milled and then air classified into five fractions to determine whether the hull structure can be disrupted and the protein constituents concentrated. The number of pin millings had only a small effect on the weight distribution of the five fractions. After one grinding, the sum of fractions 1 and 2 (<15–18 μm) represented only 3% of total hulls, and on three grindings, they amounted to only 6% of the hulls. Fraction 3 (19–24 μm) shifted from 16 to 20% with three grindings, while fraction 4 (25–30 μm) remained unchanged at 5%. Fraction 5 (>30 μm) shifted from 75 to 69% on three pin millings to compensate for the shifts noted in fractions 1–3. Scanning electron microscopy revealed that fractions 1 and 2 consisted of the parenchymal cell layers (innermost portion) of the hulls; these fractions had three times the protein content and more than twice the amount of lipids found in the ground starting material. Fraction 3 contained many of the hourglass cells typically found in the middle layer of the hulls plus parenchyma cell material and exhibited about twice the amount of protein and lipid found in the starting hulls. Fraction 4 included large hourglass cells plus globular material and contained about twice the amount of protein and about one and one‐half times the lipid of the starting material. Fraction 5 consisted primarily of clumps of palisade cells (outer cellular layer) adhering to each other and had a lower protein and lipid content than the starting hulls. Thus, pin milling causes some selective disruption of the hulls where parenchyma cell layers and hourglass cells are partially released. The palisade cells, however, are the most difficult to disrupt and constitute the fraction most resistant to pin milling. Our findings suggest that pin milling soybean hulls in combination with air classification can be used to concentrate the proteins and lipids in the fines fractions.

show abstract

Cholesterol Content of Restructured Pork/Soy Hull Mixture

Ibrahim

Unklesbay

Kapila

et al. 1990

Journal of Food Science

Self Cite

View full text Add to dashboard Cite

Heat processingThe effect of convective heat processing was studied on cholesterol and its oxides in a restructured pork/soy hull model system. Products were analyzed from 30 different time-temperature conditions of processing. Following lipid extraction, GC-MS was used for analysis of cholesterol and its oxides. No cholesterol oxides were found at 2 ppm in the product with any of the 30 time-temperature profiles, ranging from 19 -89.6 min of heat processing, and 9-97°C final product temperatures. Cholesterol in heat-processed samples ranged from 45.43-66.47 mg/lOOg. Positive correlations were found between final temperatures and fat and cholesterol content.

show abstract

EFFECT OF PARTICLE SIZE AND HEAT ON ABSORPTIVE PROPERTIES OF SOY HULLS^1,²

Cited by 8 publications

References 20 publications

Soybean hulls as a dietary fiber source for dogs.

Soybean hulls as a dietary fiber source for dogs.

Air Classification of Pin‐Milled Soybean Hulls

Cholesterol Content of Restructured Pork/Soy Hull Mixture

Contact Info

Product

Resources

About

EFFECT OF PARTICLE SIZE AND HEAT ON ABSORPTIVE PROPERTIES OF SOY HULLS1,2

Cited by 8 publications

References 20 publications

Soybean hulls as a dietary fiber source for dogs.

Soybean hulls as a dietary fiber source for dogs.

Air Classification of Pin‐Milled Soybean Hulls

Cholesterol Content of Restructured Pork/Soy Hull Mixture

Contact Info

Product

Resources

About

EFFECT OF PARTICLE SIZE AND HEAT ON ABSORPTIVE PROPERTIES OF SOY HULLS^1,²