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11 results on '"Petras, R."'

1. Meat extenders from different sources as protein-rich alternatives to improve the technological properties and functional quality of meat products

Author

Rocchetti, Gabriele, Ferronato, Giulia, Sarv, Viive, Kerner, Kristi, Venskutonis, Petras R, and Lucini, Luigi

Abstract

In the last years, animal proteins from meat and meat-derived products have represented one of the main concerns to achieve a sustainable food production. Within this perspective, the partial replacement of meat with nonmeat substances having a high-protein content, offers interesting opportunities to reformulate more sustainable meat products characterized also by potential health-promoting properties. Therefore, starting from these background conditions, this short review critically summarizes recent findings on extenders from different origins, namely pulses, plant-based ingredients, plant by-products, and unconventional sources, as valuable possibility to improve the technological profile and functional quality of meat, together with providing a focus on their ability to affect the sustainability of meat products.

Published
2023
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2. Antioxidative activity of sage (Salvia officinalisL.), savory (Satureja hortensisL.) and borage (Borago officinalisL.) extracts in rapeseed oil

Author

Bandonienė, Donata, Venskutonis, Petras R., Gruzdienė, Dainora, and Murkovic, Michael

Abstract

The antioxidant activity (AA) of acetone oleoresins (AcO) and deodorised acetone extracts (DAE) of sage (Salvia officinalisL.), savory (Satureja hortensisL.) and borage (Borago officinalisL.) were tested in refined, bleached and deodorised rapeseed oil applying the Schaal Oven Test and weight gain methods at 80 °C and the Rancimat method at 120 °C. The additives (0.1 wt‐%) of plant extracts stabilised rapeseed oil efficiently against its autoxidation; their effect was higher than that of the synthetic antioxidant butylated hydroxytoluene (0.02%). AcO and DAE obtained from the same herbal material extracted a different AA. The activity of sage and borage DAE was lower than that of AcO obtained from the same herb, whereas the AA of savory DAE was higher than that of savory AcO. The effect of the extracts on the oil oxidation rate measured by the Rancimat method was less significant. In that case higher concentrations (0.5 wt‐%) of sage and savory AcO were needed to achieve a more distinct oil stabilisation.

Published
2002
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3. Antioxidative activity of sage (Salvia officinalis L.), savory (Satureja hortensis L.) and borage (Borago officinalis L.) extracts in rapeseed oil

Author

Bandonienė, Donata, Venskutonis, Petras R., Gruzdienė, Dainora, and Murkovic, Michael

Abstract

The antioxidant activity (AA) of acetone oleoresins (AcO) and deodorised acetone extracts (DAE) of sage (Salvia officinalis L.), savory (Satureja hortensis L.) and borage (Borago officinalis L.) were tested in refined, bleached and deodorised rapeseed oil applying the Schaal Oven Test and weight gain methods at 80 °C and the Rancimat method at 120 °C. The additives (0.1 wt-%) of plant extracts stabilised rapeseed oil efficiently against its autoxidation; their effect was higher than that of the synthetic antioxidant butylated hydroxytoluene (0.02%). AcO and DAE obtained from the same herbal material extracted a different AA. The activity of sage and borage DAE was lower than that of AcO obtained from the same herb, whereas the AA of savory DAE was higher than that of savory AcO. The effect of the extracts on the oil oxidation rate measured by the Rancimat method was less significant. In that case higher concentrations (0.5 wt-%) of sage and savory AcO were needed to achieve a more distinct oil stabilisation.

Published
2002
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5. Antioxidant activity of horehound (Marrubium vulgareL.) grown in Lithuania

Author

Weel, Koen G. C., Venskutonis, Petras R., Pukalskas, Audrius, Gruzdiene, Dainora, and Linssen, Jozef P. H.

Abstract

Acetone extracts (AE), deodorised acetone extracts (DAE), and deodorised water extracts (DWE) from leaves of horehound (Marrubium vulgareL. ) were tested for their antioxidant activity in rapeseed (Brassica napusL.) oil at 80°C. Well investigated antioxidants containing extracts (AE and DAE) of sage (Salvia officinalisL.) were used for comparison purposes. The effect of the extracts on the edible oil stability was assessed by measuring weight gain, peroxide value, and the UV absorption. The antioxidant activity of AE and DAE of horehound were comparable to the antioxidant activity of AE and DAE of sage. For both plants AE was shown to have better antioxidant properties than DAE. The volatile components of horehound were hydrodistilled and analysed by GC and GC/MS. Totally, 47 components were identified in the essential oil (EO), the main ones being (Z)‐β‐farnesene, β‐caryophyllene, (E)‐hex‐2‐enal, α‐humulene, and germacrene D. Thirtynine constituents are reported in M. vulgarefor the first time.

Published
1999
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6. 93rd annual convention podium and poster abstracts

Author

Davis, C. M., Strong, S. A., Hellinger, M. D., Williamson, P. R., Larach, S. W., Ferrara, A., Blake, T. B., Medich, D. S., Ziv, Y., Oakley, J. R., Reissman, P., Piccirillo, M., Ulrich, A., Nogueras, J. J., Wexner, S. D., Rubin, M. S., Bodenstein, L. E., Kent, K. C., Williamson, M. E. R., Lewis, W. G., Sagar, P. M., Holdsworth, P. J., Johnston, D., Fazio, V. W., Goldblum, J. R., Sirimarco, M. T., Lavery, I. C., Petras, R. E., Treem, W. R., Cohen, J., Davis, P. M., Hyams, J. S., Eu, K. W., Bartolo, D. C. C., Green, J. D., Riether, R. D., Rosen, L., Stasik, J. J., Sheets, J. A., Reed, J., Khubchandani, I. T., Armitage, N. C., Chapman, M., Hardcastle, J. D., Viamonte, M., Plasencia, G., Wiltz, O., Jacobs, M., Finan, P. J., Passaro, M., Church, J. M., McGannon, E., Wilson, M., Hull-Boiner, S., Kollmorgen, C. F., Meagher, A. P., Wolff, B. G., Pemberton, J. H., Martenson, J. A., Ilstrup, D. M., Moran, M. R., Ramos, A., Rothenberger, D. A., Goldberg, S. M., Johnson, D., Madoff, R. D., Wong, W. D., Finne, C. O., Konishi, F., Furuta, K., Kanazawa, K., Lockhart, D., Schmitt, S., Caushaj, P. P., Garcia-Aguilar, J., Belmonte, C., Schiesel, E. C., Mazier, W. P., Senagore, A. J., Piccirillo, M. F., Teoh, T. -A., Yoon, K. -S., Paul, R. A. Patino, Lucas, J., Nelson, R., Norton, N., Cautley, E., Schouten, W. R., Briel, J. W., Auwerda, J. J. A., de Graaf, E. J. R., Lowry, A. C., Sentovich, S. M., Blatchford, G. J., Rivela, L. J., Thorson, A. G., Christensen, M. A., Jorge, J. M. N., Yang, Y. K., Shafik, A., Allendorf, J. D. F., Kayton, M. L., Libutti, S. K., Trokel, M. J., Whelan, R. L., Treat, M. R., Nowygrod, R., Bessler, M., Frank, R. E., Saclarides, T. J., Leurgans, S., Speziale, N. J., Drab, E., Rubin, D., Hull, T. L., Schroeder, T. K., Scholefield, J. H., Ogunbiyi, O. A., Smith, J. H. F., Rogers, K., Sharp, F., Longo, W. E., Vernava, A. M., Wade, T. P., Coplin, M. A., Virgo, K. S., Johnson, F. E., Brady, M., Kavolius, J., Quan, S. H. Q., Goldstein, E. T., Feldman, S., Shub, H. A., Bennett, D. R., Kumar, R., McMillen, M. A., Thornton, S., Khoury, D. A., Opelka, F. G., Teoh, T -A., Cohen, S. M., Weiss, E. G., Ortiz, H., De Miguel, M., Armendáriz, P., Rodriguez, J., Chocarro, C., Farouk, R., Dorrance, H. R., Duthie, G. S., Rainey, J. B., Morgado, P. J., Corman, M. L., Kawamura, Y. J., Sawada, T., Muto, T., Nagai, H., Hill, J., MacLennan, I., Binderow, S. R., Daniel, N., Ehrenpreis, E. D., Jensen, J. E., Bonner, G. F., Ruderman, W. B., Milsom, J. W., Gibbs, D. H., Beck, D. E., Hicks, T. C., Timmcke, A. E., Gathright, J. B., Cheong, D., Lucas, F. V., McGinity, M., Taylor, B. A., Godwin, P., Holdsworth, P., Lewis, W., Quirke, P., Williamson, M., Kokoszka, J., Pavel, D., Abcarian, H., Stephenson, B. M., Morgan, A. R., Salaman, J. R., Wheeler, M. H., Tran, T. C. K., Willemsen, W., Kuijpers, H. C., Lehman, J. F., Wiseman, J. S., MacFie, J., Sedman, P., May, J., Mancey-Jones, B., Johnstone, D., Nwariaku, F. E., Rochon, R. B., Huber, P. J., Carrico, C. J., Ortega, A., Beart, R., Winchester, D., Steele, G., Green, R., Caushaj, P. F., Devereaux, D., Griffey, S., Reiver, D., Kmiot, W. A., Baker, R., Luchtefeld, M. A., Anthone, G., Schlinkert, R., Roig, J. V., Villoslada, C., Solana, A., Alos, R., Hinojosa, J., Lledo, S., Johnson, D. R. E., Buie, W. D., Jensen, L. L., Heine, J., Hoffmann, B., Timmcke, A., Hicks, T., Opelka, F., Beck, D., Sousa, A., AraÚjo, S. A., Damico, F. M., Cordeiro, A. C., Pinotti, H. W., Gama, A. H., Fengler, S., Pearl, R., Orsay, C., Seow-Choen, F., Ho, J. M. S., Wiltz, O. H., Torregrosa, M., Brasch, R. C., Bufo, A. J., Krienberg, P., Johnson, G. P., Gowen, G. F., Mullen, P. D., Behrens, D., Hughes, T. G., Wynn, M., Pollack, J. S., Rajagopal, A. S., Huynh, T., Schanbacher, C., Hickson, W. G. E., Yang, Y. -K., Heymen, S., Choi, S. -K., Teoh, T. -A., Wexner, S. D., Vaccaro, C. A., Teoh, T. A., Nogueras, J. J., Choi, S. K., Cheong, D. M. O., Salanga, V. D., MacDonald, A., Baxter, J. N., Finlay, I. G., Mellgren, A., Bremmer, S., Dolk, A., Gillgren, P., Johansson, C., Ahlbäck, S. O., Udén, R., Holmström, B., Ferrara, A., O'Donovan, S., Larach, S. W., Williamson, P. R., Neto, J. A. Reis, Ciquini, S., Quilici, F. A., Reis, J. A., Torrabadella, L., Salgado, G., Whelan, R. L., Horvath, K. D., Golub, R., Ahsan, H., Cirocco, W., Ziv, Y., Fazio, V. W., Oakley, J. R., Church, J. M., Milsom, J. W., Lavery, L. C., Cohen, S. M., Kmiot, W. A., Reiver, D., Reissman, P., Weiss, E. G., Alós, R., García-Granero, E., Roig, J. V., Uribe, N., Sala, C., Lledo, S., Ozuner, G., Strong, S. A., Bufo, A. J., Daniels, G., Lieberman, R. C., Feldman, S., Lucas, F. V., Longo, W. E., Polites, G., Deshpande, Y., Vernava, A. M., Niehoff, M., Chandel, B., Berglund, D. D., Madoff, R. D., Gemlo, B. T., Spencer, M. P., Goldberg, S. M., Lowry, A. C., Marcello, P. W., Roberts, P. L., Schoetz, D. J., Murray, J. J., Coller, J. A., Veidenheimer, M. C., Koltun, W. A., Bloomer, M. M., Colony, P., Ruggeiro, F., Fleshner, P. R., Michelassi, F., Lewis, W., Williamson, M., Holdsworth, P., Finan, P., Ash, D., Johnston, D., Moran, M. R., Ramos, A., Rothenberger, D. A., Antonenko, D. R., Khanduja, K. S., Fitzgerald, S. D., Meagher, A. P., Moniz-Pereira, P., Wolff, B. G., Outwater, E. K., Marks, G. J., Mohiuddin, M., Sagar, P. M., Hartley, M. N., Mancey-Jones, B., Sedman, P., May, J., MacFie, J., Holbrook, R. F., Rodriguez-Bigas, M. A., Ramakrishnan, K., Palmer, M. L., Petrelli, N. J., Takahashi, T., Nivatvongs, S., Batts, K. P., Lucas, S. W., Klein, S. N., Keidan, R. D., Bannon, J. P., Zhou, J., Armitage, N. C., Hunt, L. M., Robinson, M. H., Hugkulstone, C. E., Clarke, B., Vernon, S. A., Gregson, R. H., Hardcastle, J. D., Ryan, M., Dutta, S., Levine, A., Ortega, A., Anthone, G., Beart, R., Dominguez, J. M., Saclarides, T. J., Bolan, P., Bines, S. D., Adachi, M., Watanabe, T., Sawada, T., Okinaga, K., Muto, T., Hase, K., Shatney, C., Mochizuki, H., Johnson, D., Ure, T., Dehghan, K., Andrus, C. A., Daniel, G. L., D'Emilia, J. C., Rodriguez-Bigas, M., Suh, O. K., Brewer, D. A., Fung, C., Chapuis, P., Bokey, E. L., Garcia, J. C., Banerjee, S., Remzi, F. H., Lavery, I. C., Jorge, J. M. N., Ger, G. C., Gonzalez, L., Gee, A. S., Roe, A. M., Durdey, P., Kaye, M. D., Kyzer, S., Gordon, P. H., Hasegawa, M., Bun, P. Tae, Ikeuchi, D., Onodera, H., Imamura, M., Maetani, S., Blake, T., Hellinger, M., Grewal, H., Klimstra, D. S., Cohen, A. M., Guillem, J. G., Rooney, P. S., Gifford, K. -A., Clarke, P. A., Kuhn, J. A., Bryce, K., Frank, N., Dignan, R. D., Lichliter, W. E., Franko, E., Jacobson, R. M., Preskitt, J. T., Lieberman, Z., Tulanon, P., Steinbach, H., McCarty, T., Simons, T., Plasencia, G., Viamonte, M., Wiltz, O., Jacobs, M., Chen, W. S., Leu, S. Y., Hsu, H., Bessler, M., Halverson, A., Kayton, M. L., Treat, M. R., Nowygrod, R., Congilosi, S., Madoff, R., Wong, W. D., Rothenberger, D., Buie, W. D., Paterson, R., Cartmill, J. A., Trokel, M. J., Gingold, B. S., Cooper, M., Gorfine, S. R., Bauer, J. J., Gelernt, I. M., Kreel, I., Harris, M. T., Vallejo, J. F., Kestenberg, A., Miyajima, N., Kano, N., Ishikawa, Y., Sakai, S., Yamakawa, T., Otchy, D. P., Van Heerden, J. A., Ilstrup, D. M., Weaver, A. L., Winter, L. D., Mav, J., Lee, P. Y., Vetto, J. T., Sullivan, E. S., Rabkin, J., Mayoral, J. L., Matas, A. J., Bove, P., Visser, T., Barkel, D., Villalba, M., Bendick, P., Glover, J., Golub, R. W., Cirocco, W. C., Daniel, N., Altringer, W., Domingues, J. M., Brubaker, L. T., Smith, C. S., Kumar, S., and Gilbert, P.

Published
1994
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8. SPECTROSCOPIC DIAGNOSIS OF COLONIC DYSPLASIA

Author

Richards‐Kortum, R., Rava, R. P., Petras, R. E., Fitzmaurice, M., Sivak, M., and Feld, M. S.

Abstract

Abstract——We have developed a method for defining diagnostic algorithms for pathologic conditions based on fluorescence spectroscopy. We apply this method to human colon tissue and show that fluorescence can be used to diagnose the presence or absence of colonic adenoma. This method uses fluorescence excitation–emission matrices (EEM) to identify optimal excitation regions for obtaining fluorescence emission spectra which can be used to differentiate normal and pathologic tissues. In the case of normal and adenomatous colon tissue, these were found to be: 330, 370, and 430 nm ± 10 nm. At these excitation wavelengths, emission wavelengths for use in diagnostic algorithms are identified from average difference and ratio of the spectra from normal and pathologic tissues. In colon tissue, at 370 nm excitation, 404, 480, and 680 nm were found to be useful emission wavelengths for diagnosing the presence of adenoma in vitro. The basis of colon tissue autofluorescence was investigated using EEM of pure molecules and relevant excitation–emission maxima in the literature.

Published
1991
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9. Anorectal malignant melanoma has a poor prognosis

Author

Antoniuk, P. M., Tjandra, J. J., Webb, B. W., Petras, R. E., Milsom, J. W., and Fazio, V. W.

Abstract

Clinicopathologic features and surgical treatment of 15 patients with primary anorectal malignant melanoma were studied retrospectively. There was a female preponderance (2:1). The median age was 66 years. Common initial symptoms were rectal bleeding (87%) and/or anal pain (33%); 25% of the melanomas were amelanotic. The maximum tumor size ranged between 0.8 and 8.4 cm (median 3.0 cm). Of the tumors evaluated histologically (n=12), tumor thickness ranged from 0.9 to 11.3 mm (median 6.1 mm). All melanomas invaded at least into the subepithelial tissue (n=8) and/or the submucosa of the distal rectum (n=4), with extension into the internal anal sphincter (n=5) and lamina propria (n=3). Endoluminal ultrasound accurately demonstrated depth of invasion in 3 of 3 patients. Three (20%) patients with distant metastases at initial presentation had a mean survival of 8 mo; one of these primary melanomas measured 0.8 cm. Of 12 patients undergoing “curative” treatments — 4 by abdominoperineal resection (APR) and 8 by local excision (LE), the incidence of loco-regional recurrence was similar (2/4 and 5/8). All these 7 patients with loco-regional recurrence developed distant metastases within 3 months. The mean survival was similar between APR and LE in the total group (25 mo vs 20 mo), in the decreased (27 mo vs 24 mo) and in those treated with a curative intent (29 mo vs 22 mo). There was no long-term survivor but four patients remained tumor-free up to 19 mo after APR (n=1) or LE (n=3). Thus anorectal melanoma has a poor prognosis and, when technically feasible, LE appears to have similar results as APR.

Published
1993
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11. Determination of Rosmarinic Acid in Sage and Borage Leaves by High-Performance Liquid Chromatography with Different Detection Methods

Author

Bandoniene, Donata, Murkovic, Michael, and Venskutonis, Petras R.

Abstract

Rosmarinic acid is separated and identified on the basis of high-performance liquid chromatography (HPLC)-UV-mass spectrometry data in 80% methanol in water extracts from the leaves of Salvia species (S. officinalis, S. glutinosa, S. aethiopis, S. sclarea, and Borago officinalis) as a dominant radical scavenger towards the 2,2′-diphenyl-1-picrylhydrazyl (DPPH·) stable radical in HPLC-DPPH· system. The content of rosmarinic acid in the plants is calibrated and quantitated from chromatograms obtained by UV detection at 280 nm. The concentration ranges from 13.3 to 47.3 mg of the phenolic acid per gram dried leaves of all plants is tested. S. glutinosa and S. sclarea have the highest concentration of rosmarinic acid. The amount of rosmarinic acid in borage leaves is similar compared with Salvia officinalis (15 mg/g). The HPLC-DPPH· system is calibrated for quantitative DPPH· scavenging assessment of rosmarinic acid. The results reveal excellent correlation (r2 = 0.98) between the rosmarinic acid concentration and antiradical activity.

Published
2005
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