E-ISSN 2576-3288
 

Original Research 


An in vitro screening study of food functions among vegetable cultivars consumed in Japan

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi.

Abstract
Aim: Ingesting vegetables plays a major role in health maintenance and disease prevention. Therefore, this study aimed to identify hitherto unknown food functionalities among various vegetable cultivars consumed in Japan.
Methods: Water-soluble vegetable extracts were screened for various types of functionality such as antioxidant action, the inhibition of platelet aggregation, blood coagulation and the enzymatic actions of á-glucosidase and pancreatic lipase. Antioxidant activity was measured as the ability to scavenge 1,1-diphenyl-2-picryl hydrazine (DPPH) radicals and the inhibitory activity of rat intestinal a-glucosidase was evaluated by measuring amounts of glucose produced from maltose. Lipase activities were measured using porcine pancreatic lipase and synthetic substrate. Platelet aggregation was measured using bovine whole blood stimulated with collagen. Plasma coagulation activities were measured using human plasma. Coagulation was initiated using intrinsic and extrinsic coagulation initiators and coagulation times were measured using a coagulometer.
Results: All extracts from cabbage, onion, eggplant, tomato, green pepper, Japanese radish and Chinese cabbage and their cultivars exerted antioxidant activities. All vegetable extracts had weak á-glucosidase inhibitory activity, but one Chinese cabbage cultivar had significantly more of such activity. All vegetable extracts had very weak ability to inhibit pancreatic lipase and did not inhibit platelet aggregation or affect intrinsic and extrinsic blood coagulation activity.
Conclusion: Although further investigations are needed, the present findings provide fundamental information about the functionality of some vegetables consumed in Japan.

Key words: antioxidant, α-glycosidase, lipase, platelet, coagulation, lifestyle diseases


 
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Pubmed Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. An in vitro screening study of food functions among vegetable cultivars consumed in Japan. Am J Res Med Sci. 2018; 3(1): 1-6. doi:10.5455/ajrms.20180126090406


Web Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. An in vitro screening study of food functions among vegetable cultivars consumed in Japan. http://www.ajrms.com/?mno=289295 [Access: December 09, 2018]. doi:10.5455/ajrms.20180126090406


AMA (American Medical Association) Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. An in vitro screening study of food functions among vegetable cultivars consumed in Japan. Am J Res Med Sci. 2018; 3(1): 1-6. doi:10.5455/ajrms.20180126090406



Vancouver/ICMJE Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. An in vitro screening study of food functions among vegetable cultivars consumed in Japan. Am J Res Med Sci. (2018), [cited December 09, 2018]; 3(1): 1-6. doi:10.5455/ajrms.20180126090406



Harvard Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi (2018) An in vitro screening study of food functions among vegetable cultivars consumed in Japan. Am J Res Med Sci, 3 (1), 1-6. doi:10.5455/ajrms.20180126090406



Turabian Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. 2018. An in vitro screening study of food functions among vegetable cultivars consumed in Japan. American Journal of Research in Medical Sciences, 3 (1), 1-6. doi:10.5455/ajrms.20180126090406



Chicago Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. "An in vitro screening study of food functions among vegetable cultivars consumed in Japan." American Journal of Research in Medical Sciences 3 (2018), 1-6. doi:10.5455/ajrms.20180126090406



MLA (The Modern Language Association) Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi. "An in vitro screening study of food functions among vegetable cultivars consumed in Japan." American Journal of Research in Medical Sciences 3.1 (2018), 1-6. Print. doi:10.5455/ajrms.20180126090406



APA (American Psychological Association) Style

Naoki Ohkura, Riko Fujita, Ruri Kanai, Kenichi Ishibashi, Hiroshi Ueda, Gen-ichi Atsumi (2018) An in vitro screening study of food functions among vegetable cultivars consumed in Japan. American Journal of Research in Medical Sciences, 3 (1), 1-6. doi:10.5455/ajrms.20180126090406





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