Nutrient density and bioaccessibility, and the antioxidant, satiety, glycemic, and alkalinizing potentials of fruit-based foods according to the degree of processing: a narrative review

被引:21
作者
Fardet, Anthony [1 ]
Richonnet, Celine [2 ]
机构
[1] Univ Clermont Auvergne, Dept Human Nutr, CRNH Auvergne, INRA,UNH, F-63000 Clermont Ferrand, France
[2] MOM Grp, Dept Nutr, 1 Rue Pepiniere, Paris, France
关键词
Fruits; processing; nutrient density; bio-accessibility; glycemic index; satiety potential; antioxidant capacity; alkalinizing potential; PULSED ELECTRIC-FIELDS; IN-VITRO BIOACCESSIBILITY; PERCENT POLYMERIC COLOR; RADICAL-SCAVENGING ACTIVITY; SUGAR SWEETENED BEVERAGES; PASTEURIZED ORANGE JUICE; B-INDUCED CHANGES; VITAMIN-C; ASCORBIC-ACID; BIOACTIVE COMPOUNDS;
D O I
10.1080/10408398.2019.1682512
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Epidemiological studies suggest that the protective effects of fruits against chronic diseases may vary according to their extent of processing. We therefore reviewed what the scientific literature states about the potential mechanisms underlying this "processing" effect by focusing on the most significant nutritional properties, namely, the nutritional density of bioactive compounds, the digestive bio-accessibility of nutrients, and the antioxidant, satietogenic, alkalizing and glycemic potentials. When possible, we have ranked fruits according to the international NOVA classification as un-/minimally processed, processed (mainly with added sugars), and ultra-processed fruits. Our literature review confirms that the more fruits are processed, the lower are their alkalizing, antioxidant and satietogenic potentials. For the glycemic index, the results are more difficult to interpret because fruits are a significant source of fructose with a very low glycemic index that "distorts" the "processing" effect. However, fruits in sirup tend to have a higher glycemic index, probably because of the highly bioavailable added sugars. Overall, the destructuration of the fruit fibrous matrix by thermal and mechanical treatments, combined with the addition of simple sugars, constitute the treatments that most degrade the fruit nutritive quality by diluting the nutritional density and attenuating the "matrix" effect. The new technological processes described as "nonthermal" (e.g., pulsed electric fields, high pressures, supercritical CO2, radiation, etc.) seem promising as they limit vitamin C and antioxidant phytonutrient losses in fruit while allowing satisfactory storage time. To preserve fruit longer, drying appears to be an interesting alternative to maintain the health potential of fruit, although it causes antioxidant losses. Finally, although "5 fruits and vegetables a day" is a well-known nutritional recommendation, in view of the results reviewed here, it would be relevant to be precise and include "preferably minimally processed".
引用
收藏
页码:3233 / 3258
页数:26
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