Eri silkworm: a source of edible oil with a high content of α‐linolenic acid and of significant nutritional value

Longvah, T.; Manghtya, Korra; Qadri, Syed S.Y.H.

doi:10.1002/jsfa.5572

Cited by 62 publications

(45 citation statements)

References 30 publications

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“…This was believed to be thanks to α-linolenic acids which are rich in silkworm pupae [16,22]. That is to say that a high protein diet such as silkworm pupa oil could significantly reduce the TC concentrations in the blood, TG, low-density lipoprotein cholesterol (LDL-C), atherogenic indices, platelet aggregability, etc., compared with the control group, whereas it showed an significantly increased level of high-density lipoprotein cholesterol (HDL-C) [22].…”

Section: Discussionmentioning

confidence: 99%

“…Palmitoleic acid, oleic acid, and linoleic acid which are fatty acids of dried silkworm pupae account for about 70 percent [15]. As a result of having rats take silkworm pupae oil for 18 weeks, total cholesterol in blood and triglycerides were significantly reduced as well as high-density lipoprotein cholesterol was notably increased [16]. Peptide, which is not a fatty acid of silkworm pupae, is also reported to be effective in inhibiting the synthesis of fat [17].…”

Section: Introductionmentioning

confidence: 99%

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Silkworm pupae powder ingestion increases fat metabolism in swim-trained rats

Ryu

2014

Journal of Exercise Nutrition and Biochemistry

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[Purpose]Many researchers are trying to solve the metabolic syndrome by utilizing a variety of nutritional control and exercise. Of those, silkworm pupae peptides are known to inhibit the synthesis of fat. Therefore, we examine the effect of fat metabolism by supplying silkworm pupae (SP) for 5-week in swim-trained rats.[Methods]Animals were divided into four groups as a group (n = 32) fed a normal diet (CO) with exercise training (CE); a group fed a silkworm pupa diet (SPC) with an exercise training (SPE), respectively.[Results]Abdominal fat pads (abdominal and epididymal) weight were lowest in SPE. The serum triglyceride, total cholesterol concentrations were lower in the SP and the SPE. HDL-cholesterol, however, was not different between groups. Liver AMPK (AMP-activated protein kinase) was increased in the CE and the SPE. Liver PPAR-α (Peroxisome proliferator-activated receptor alpha) was increased in the SPC and SPE. L-FABP (liver fatty acids binding protein) was increased by SP ingestion. Liver CPT-1 (carnitine palmitoyltransferase-1) protein expression was increased by exercise training only.[Conclusion]In the present study showed that the silkworm pupae intake and/or swimming exercise training activates fat metabolism to reduce the concentration of serum lipids. Thus, the silkworm pupae intake leads to a reduction in fat storage, this is considered to be effective in the inhibition of the metabolic syndrome.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silkworm pupae powder ingestion increases fat metabolism in swim-trained rats

Ryu

2014

Journal of Exercise Nutrition and Biochemistry

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“…Eri silkworm feeds on leaves of two major plants, castor and tapioca and it was reported that the pupae fed on tapioca leaves had a higher content of ALA compared to the pupae fed on castor leaves. A recent report suggested that the oil was toxicologically safe and nutritionally equivalent to commonly used vegetable oils with added benefits due to high ALA content (Longvah et al, 2012). In the present study, we report the isolation of ALA from eri silkworm oil and its incorporation into egg PC which could be more economical than the reported methods for the preparation of nutraceutical products with ALA.…”

Section: Introductionmentioning

confidence: 56%

Enzymatic modification of phosphatidylcholine with n-3 PUFA from silkworm oil fatty acids

Kaki¹,

Ravinder²,

Ashwini³

et al. 2014

Grasas y Aceites

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SUMMARY: α-Linolenic acid (ALA) containing phosphatidylcholine (PC) was prepared by an enzymatic method employing natural substrates comprising of egg and eri silkworm oil. Eri silkworm oil extracted from eri pupae was saponified to obtain the fatty acid mixture which was further subjected to urea complexation to obtain an ALA rich fraction with a purity of about 93%. Transesterification of PC with the ALA rich fraction with three immobilized lipases namely Lipozyme TL IM, Lipozyme RM IM and lipase from Candida Antarctica showed that only the lipase from Candida antarctica was successful for the incorporation of ALA into egg yolk PC. It was found that ALA was incorporated by up to 27% in the sn-1 position of egg PC and the positional distribution analysis of fatty acids in the modified PC showed that the sn-1 position was found to contain about 59% ALA.KEYWORDS: α-linolenic acid; Egg phosphatidylcholine; Lipase; Nutraceuticals; Silkworm oil RESUMEN: Modificación enzimática de fosfatidilcolina con n-3 PUFA a partir de ácidos grasos de aceites de gusanos de seda. El ácido α-linolénico (ALA) contenido en fosfatidilcolina (PC) se preparó mediante un método enzimático empleando sustratos naturales que comprenden huevo y aceite de gusanos de seda. El aceite extraído de las crisálidas de gusanos de seda se saponificó para obtener la mezcla de ácidos grasos que se sometió a complejación con urea para obtener la fracción rica en ALA, con una pureza aproximadamente del 93%. La transesterificación de PC con fracción rica en ALA con tres lipasas inmovilizadas, Lipozyme TL IM, Lipozyme RM IM y lipasa de Candida antárctica, mostró que sólo la lipasa de Candida antarctica tuvo éxito en la incorporación de ALA en PC de yema de huevo. Se encontró que el ALA fue incorporado hasta 27% en la posición sn-1 de PC de huevo y el análisis de la distribución de los ácidos grasos en PC modificado mostró que la posición sn-1 que contenía aproximadamente 59% de ALA.

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“…The SL prepared contains ALA in similar amounts to soyabean oil and hence, can be tested for the applications where soyabean oil is used to further expand its application. Further studies for producing additional SL with SWO could be of interest based on preliminary evaluation of the SL as SWO is reported to be safe based on its toxicological evaluation (Longvah, 2012). …”

Section: Resultsmentioning

confidence: 99%

“…It was reported that eri silkworm oils contain a high amount of ALA in the range of 45%-55% depending on the feeding source (Kaki, 2006). The oil has been studied for its toxicity and was found that it is equivalent to other vegetable oils and also the oxidative stability of the SWO was shown to be improved when stored with appropriate antioxidants (Thumu, 2015;Longvah, 2012). As part of our research interest on value addition to eri silkworm oil (Ravinder, 2015;Kaki, 2014;Thumu, 2015), we attempted to prepare a SL with eri SWO and PO as substrates.…”

Section: Introductionmentioning

confidence: 99%