Classification of feeding fats by FT‐IR spectroscopy

Gasperini, Gianmaria; Fusari, Elena; Bella, Laura Della; Bondioli, P.

doi:10.1002/ejlt.200700015

Cited by 13 publications

(15 citation statements)

References 4 publications

(3 reference statements)

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“…Figure 2 indicates the possible presence of phosphorous (1164 and 1024/cm) and alcoholic groups (3400/cm), but comparing this spectrum with that of a natural lecithin sample shows some differences. The FTIR spectrum of lecithin was recently published [5]. According to the experimental results the unknown product could be a lecithin derivative or degradation product.…”

Section: Identification Of Lysophosphatides -Insoluble Sediment Isolamentioning

confidence: 98%

Nature of some insoluble materials recovered from biodiesel samples

Bondioli¹

2009

Euro J Lipid Sci & Tech

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This paper summarises the work carried out over the last few years on the identification of the insoluble material that may affect quality and performance of biodiesel. The correct isolation and purification procedure is important for sediment identification. The main objective is FTIR analysis of the purified materials. In the present report the FTIR technique was used to provide some preliminary information about the nature of the isolated solid product. In every case, starting from this information, several other tests (carried out by TLC, GC, GC/MS and HPLC) were used to identify the real structure of contaminants. Interesting case studies, such as the recovery and identification of waxes, lysophosphatides, filter aids, citric acid salts, steryl glucosides and other contaminating molecules are presented and discussed. For each case, the logical path for the solution of problem is presented, starting from the purification step, through the FTIR spectrum until specific chemical tests.

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Section: Identification Of Lysophosphatides -Insoluble Sediment Isolamentioning

confidence: 98%

Nature of some insoluble materials recovered from biodiesel samples

Bondioli¹

2009

Euro J Lipid Sci & Tech

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“…In a preliminary study, more than 120 commercial fat products were characterized (Gasperini et al, 2007;Á balos et al, 2008;Abbas et al, 2009;Nuchi et al, 2009;Ubhayasekera and Dutta, 2009;Van Ruth et al, 2010). Those containing the highest concentrations of several pollutants and undesirable compounds, including oxidation products, were selected for a series of experimental chicken and rabbit trials.…”

Section: Introductionmentioning

confidence: 99%

Use of recovered frying oils in chicken and rabbit feeds: effect on the fatty acid and tocol composition and on the oxidation levels of meat, liver and plasma

Tres

Bou

Guardiola

et al. 2013

Animal

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The addition of some fat co-and by-products to feeds is usual nowadays; however, the regulations of their use are not always clear and vary between countries. For instance, the use of recycled cooking oils is not allowed in the European Union, but they are used in other countries. However, oils recovered from industrial frying processes could show satisfactory quality for this purpose. Here we studied the effects of including oils recovered from the frying industry in rabbit and chicken feeds (at 30 and 60 g/kg, respectively) on the fatty acid (FA) and tocol (tocopherol 1 tocotrienol) compositon of meat, liver and plasma, and on their oxidative stability. Three dietary treatments (replicated eight times) were compared: fresh non-used oil (LOX); oil discarded from the frying industry, having a high content of secondary oxidation compounds (HOX); and an intermediate level (MOX) obtained by mixing 50 : 50 of LOX and HOX. The FA composition of oil diets and tissues was assessed by GC, their tocol content by HPLC, the thiobarbituric acid value was used to assess tissue oxidation status, and the ferrous oxidation-xylenol orange method was used to assess the susceptibility of tissues to oxidation. Our results indicate that FA composition of rabbit and chicken meat, liver and plasma was scarcely altered by the addition of recovered frying oils to feed. Differences were encountered in the FA composition between species, which might be attributed mainly to differences in the FA digestion, absorption and metabolism between species, and to some physiological dietary factors (i.e. coprophagy in rabbits that involves fermentation with FA structure modification). The a-tocopherol (aT) content of tissues was reduced in response to the lower aT content in the recovered frying oil. Differences in the content of other tocols were encountered between chickens and rabbits, which might be attributable to the different tocol composition of their feeds, as well as to species differences in the digestion and metabolism of tocols. Tissue oxidation and susceptibility to oxidation were in general low and were not greatly affected by the degree of oxidation of the oil added to the feeds. The relative content of polyunsaturated fatty acids/aT in these types of samples would explain the differences observed between species in the susceptibility of each tissue to oxidation. According to our results, oils recovered from the frying industry could be useful for feed uses.Keywords: vegetable frying oils, tissue lipid composition, feed ingredients, oxidability, vitamin E ImplicationsVarious fat by-products of the food chain are included in feeds. Recycled cooking oils are not intended for feed uses in the European Union, although they might be used in other countries. However, oils recovered from industrial frying processes could show satisfactory quality for this purpose. Thus, here we studied how the addition of frying oils to feeds affects the lipid composition and the stability of meat and other animal tissues. Our results reveal an acceptable ...

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“…Our study was undertaken in the framework of a larger project (Feeding Fats Safety, http:// www.ub.edu/feedfat/), dealing with the characterization of fat co-and by-products from the food chain used in feeds and their effects on animal production, animal tissue composition and meat stability. In a preliminary study, more than 120 commercial fat co-and by-products were characterized (Gasperini et al, 2007;Á balos et al, 2008;Abbas et al, 2009;Nuchi et al, 2009;Ubhayasekera and Dutta, 2009;van Ruth et al, 2010), and those containing the highest levels of dioxins, polycyclic aromatic hydrocarbons and polybrominated diphenyl ethers, TFA and oxidation compounds were selected for testing in chicken and rabbit trials. This paper is the first of a series of articles reporting the effects of the addition of these selected fat by-products on the composition of animal tissues.…”

Section: Introductionmentioning

confidence: 99%

Use of palm-oil by-products in chicken and rabbit feeds: effect on the fatty acid and tocol composition of meat, liver and plasma

Tres

Nuchi

Magrinyà

et al. 2012

Animal

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This study was undertaken in the framework of a larger European project dealing with the characterization of fat co-and byproducts from the food chain, available for feed uses. In this study, we compare the effects, on the fatty acid (FA) and tocol composition of chicken and rabbit tissues, of the addition to feeds of a palm fatty acid distillate, very low in trans fatty acids (TFA), and two levels of the corresponding hydrogenated by-product, containing intermediate and high levels of TFA. Thus, the experimental design included three treatments, formulated for each species, containing the three levels of TFA defined above. Obviously, due to the use of hydrogenated fats, the levels of saturated fatty acids (SFA) show clear differences between the three dietary treatments. The results show that diets high in TFA (76 g/kg fat) compared with those low in TFA (4.4 g/kg fat) led to a lower content of tocopherols and tocotrienols in tissues, although these differences were not always statistically significant, and show a different pattern for rabbit and chicken. The TFA content in meat, liver and plasma increased from low-to-high TFA feeds in both chicken and rabbit. However, the transfer ratios from feed were not proportional to the TFA levels in feeds, reflecting certain differences according to the animal species. Moreover, feeds containing fats higher in TFA induced significant changes in tissue SFA, monounsaturated fatty acids and polyunsaturated fatty acids composition, but different patterns can be described for chicken and rabbit and for each type of tissue.

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Classification of feeding fats by FT‐IR spectroscopy

Cited by 13 publications

References 4 publications

Nature of some insoluble materials recovered from biodiesel samples

Nature of some insoluble materials recovered from biodiesel samples

Use of recovered frying oils in chicken and rabbit feeds: effect on the fatty acid and tocol composition and on the oxidation levels of meat, liver and plasma

Use of palm-oil by-products in chicken and rabbit feeds: effect on the fatty acid and tocol composition of meat, liver and plasma

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