成熟程度对芒果果肉酒精发酵动力学的影响

P. Diakabana, S. Kobawila, V. Massengo, D. Louembé
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引用次数: 10

摘要

与刚果生产的其他芒果相比,Boko芒果的果实具有非常特殊的物理和感官特征。这种水果的平均重量为390克,非常接近lippens和broagt品种,但果肉产量(占果实重量的67%)要高得多。其宽度(107.94±20.09 mm)和厚度(72.27±5.35 mm)相当规则,但球度指数(0.88±0.52)非常分散。boko芒果果实的各种理化特性取决于生理成熟程度,由β成熟指数(从β 1 = 18.22到β 3 = 83.5)评估。当成熟指数较高时(β 3 = 83.5),果实就会过度成熟。这对应于酸度急剧下降72.6%,水分含量显著下降(从83.98%下降到81.18%),但糖含量显著增加(从10°Brix上升到19°Brix)。芒果果肉的低酸度(2g h2so4 /l)是测试果汁不完全发酵的原因。为了提高芒果果肉汁每小时的乙醇产量,有必要通过添加一份不太成熟的芒果果肉来间接酸化。------------------------------------------------------------------------------------------------------------------------------------ index on the Effect of the陈化发酵动力学of乙基of juice from the mango cultivar’’Boko’’低俗。“boko”芒果的果实与刚果生产的其他芒果相比具有非常特殊的物理和生理特征。果实The mass of this is - on average and close to戴的堡垒of lippens broagt的目的,its低俗的产量(67% of The mass of fruit) is much higher。其宽度(107.94±20.09 mm)和厚度(72.27±5.35 mm)略规则,但球度指数(0.88±0.52)变化较大。“boko”芒果果实的各种物理化学特性取决于成熟指数β(从β 1 =18.22到β 3 = 83.5)评估的生理成熟程度。The over-ripening of this果实occurs when The value of The熟化was higher索引(β= 3 83.5)and喜欢to a decrease被命名of a degree of acidity of 72.6%,重大decrease in water content(从83.98% 81.18% of a毁灭”(increase in water),是sugar content (from10°糖度Brix 19°摄氏度)。(2g of The low acidity) 2分4 / l) of over-ripened mango低俗is SO for The of juice test发酵完全负责。为了提高成熟芒果果肉果汁的乙醇产量,必须通过提供一份不成熟的芒果果肉来直接酸化。
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Effet du degré de maturation sur la cinétique de fermentation éthylique de la pulpe de mangue cultivar BOKO
Le fruit de la mangue «  Boko » presente des caracteristiques physiques et organoleptiques tres particulieres comparees aux autres mangues produites au Congo. La masse de ce fruit est de 390g en moyenne et tres proche de celle des varietes lippens et broagt , mais son rendement en pulpe (67% de la masse du fruit) est nettement  plus eleve. Sa largeur (107,94±20,09mm) et son epaisseur (72,27±5,35mm) sont assez regulieres mais son indice de sphericite (0,88±0,52) est tres disperse. Les  diverses caracteristiques physicochimiques du fruit de la mangue ’’Boko’’ sont fonction du degre de maturation physiologique evalue a partir de l’indice de maturation β (de β 1 =18,22 a β 3 = 83,5). La  surmaturation de ce fruit intervient lorsque la valeur de l’indice de maturation est superieur (β 3 =83,5). Elle correspond  a une forte diminution du degre d’acidite de 72,6%, une diminution significative de la teneur en eau (de 83,98% a 81,18% d’eau), mais a une augmentation considerable de la teneur en sucre (de 10 a 19° Brix). La faible acidite (2g de H 2 SO 4 /l) de la pulpe de mangue surmaturee est responsable de la fermentation incomplete du jus teste. Afin d’ameliorer la productivite horaire en ethanol du jus de pulpe de mangue surmaturee, il serait necessaire de proceder a une acidification indirecte par l’apport d’une portion de pulpe de mangue moins mure. ------------------------------------------------------------------------------------------------------------------------------------ Effect of the maturation index on the kinetic of ethyl fermentation of juice from the mango cultivar'' Boko’’ pulp. The fruit of the mango'' boko’’ presents physical and organoleptic characteristics very special compared to other mangoes produced in Congo. The mass of this fruit is 390g on average and very close to those of lippens and broagt varieties, but its pulp yield (67% of the mass of fruit) is much higher. Its width (107, 94±20,09mm) and thickness (72, 27±5,35mm) are fairly regular, but the sphericity index (0, 88±0, 52) is very varied. The various physicochemical characteristics of mango ‘’ boko' ' fruit depend on the degree of physiological maturity assessed from the maturation index β (from β 1 =18.22 to β 3 = 83.5). The over-ripening of this fruit occurs when the value of the maturation index was higher (β 3 = 83.5) and corresponds to a decrease pronounced of degree of acidity of 72.6%, a significant decrease in water content (from 83.98% to 81.18% of water), but a considerable increase in sugar content (from10° Brix to 19° Brix). The low acidity (2g of H 2 SO 4 /l) of over-ripened mango pulp is responsible for the incomplete fermentation of juice tested. To improve the hourly productivity in ethanol from juice of ripened mango pulp, it would be necessary to acidify indirectly by providing a portion of mango pulp less mature.
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