芒果加工专用品种的初步筛选研究

研究了广西芒果主栽品种的加工特性,通过对其色泽、香味、糖酸比、储藏性等主要加工指标的比较,综合考虑其它品质后,得出较适合于加工芒果原浆、芒果浓缩汁的6个品种。     

不同品种芒果核中多酚类化合物的鉴定及抗氧化活性分析

研究不同品种芒果核内所含的多酚类物质及其抗氧活性.对4种市售芒果(象牙芒、玉芒、紫花芒和三年芒)核中多酚类物质进行提取、测定以及统计学分析.结果表明:芒果核中含有较为丰富的多酚类物质且具有良好的抗氧化活性,其中紫玉芒核中多酚含量最高,其抗氧化活性最强,其次是象牙芒核和三年芒核,玉芒核最差;4个品种的芒果核提取物存在较大...     

芒果原浆、芒果糖浆的研制

本文研究了以芒果为原料加工成芒果原浆、芒果糖浆的适宜加工品种、加工工艺和配方、色泽风味保持、产品评价,提出了适宜加工品种、合理工艺和操作要点、产品配方和质量标准。是一项适宜芒果产地的芒果加工技术。     

芒果原浆、芒果糖浆的研制

本文研究了以芒果为原料加工成芒果原浆,芒果糖浆的适宜加工品种,加工工艺和配方,色泽风味保持,产品评价,提出了适宜加工品种,合理工艺和操作要点,产品配方和质量标准,是一项适宜芒果产地的芒果加工技术。     

低糖无硫芒果果脯的研制

研究低糖无硫芒果果脯的加工技术,并对影响低糖无硫芒果果脯色泽、饱满度、口感、糖含量等品质因子的关键参数进行研究。     

环境温度对"紫花"芒果后熟及感官品质的影响

以0.1%的乙烯利处理"紫花"芒果(Mangifera indica cv.Zihua),研究环境温度对其后熟进程和感官品质的影响。结果表明:30℃促进了芒果的后熟进程,第4d果实达到完熟,而在20℃条件下需要6d;20℃贮运环境有利于芒果果皮叶绿素降解,表现为其果皮h值降低,果实均匀饱满,果肉可溶性固形物升高,保持合适的糖酸比,口感较佳。在20℃催熟芒果中检测出36种呈香物质,并含有更多种类的醇、酮、酯等芳香物质,高于30℃催熟芒果的26种。综合比较后熟芒果的感官品质指标,20℃贮运环境促进了催熟芒果的内源生化反应,更有利于芒果后熟。     

低糖无硫芒果果脯的研制

研究低糖无硫芒果果脯的加工技术,并对影响低糖无硫芒果果脯色泽、饱满度、口感、糖含量等品质因子的关键参数进行研究。     

醉入芒果大餐(续)

香芒带子火龙船厨师主管朱玉清/制作主料:带子、芒果、火龙果。配料:青椒、青红椒、洋葱。制法:带子飞水过油,加入芒果、火龙果、青红椒、洋葱软炒即可。特点:色泽亮丽、味道鲜美、老少皆宜。泰式芒果腌法式鸭胸冷菜主管肖明利/制作主料:法式鸭胸。配料:芒果、泰式鸡酱。制法:将鸭胸蒸熟切片,芒果切片排好,淋上泰式鸡酱即可。特点:酸甜开胃、果味香滑。芒果鱼子沙拉冷菜主管肖明利/制作主料:芒果、鱼子、沙律酱。制法:芒果切粒、盛上芒果盏上,放上鱼子、沙律酱即可。特点:色泽分明,红、黄、白三色相映,营养价值丰富。铁板香芒肥牛卷厨房主管…     

六个欧美杂交种葡萄酿酒品质的试验研究

本实验选用了三个新引进的欧美杂交酿酒品种维德、此安卡、贵族,与南方目前主栽的三个欧美杂交酿酒品种水晶、玫瑰蜜、法国野进行了酿酒特性和成酒理化指标、感官品质的比较分析.结果表明新引进的三个品种都表现了良好的发酵曲线,成品酒理化指标优良,在香气和口感上也较原有品种好,值得在我国南方地区进行试种和评估.     

枸杞原浆品质分析与评价标准构建

本文对市售的46个枸杞原浆产品的主要成分、色泽、风味等指标进行测定,对比分析枸杞原浆产品品质,初步构建评价标准。结果表明:枸杞原浆样品总体表现出较好的枸杞营养和风味特征,但不同产品品质差异较大,pH在4.04～4.62之间,粘度在6.63～116.60 cP之间,可溶性固形物在12.77%～30.63%之间,总糖含量在93.19～220.26 mg/g之间,黄酮含量在23.43～87.27 μg/g之间,总类胡萝卜素含量在3.23～1579.47 μg/g之间,色泽总体均表现为明亮的橙红色,各样品在鲜味、酸味、涩味、咸味等八种风味特征均有响应,气味分析中差异较大的几类化合物为烷烃类、醇类和挥发性硫化物。基于主成分分析得到了各指标与主成分的相关程度和贡献程度,确立了枸杞原浆的品质评价指标,采用概率分级建立了枸杞原浆品质评价指标分级标准,利用层次分析构建枸杞原浆品质评价标准,获得各枸杞原浆样品的综合得分,为枸杞原浆品质评价及质量标准制定提供数据参考。     

Cultivar relationships in mango based on fruit volatile profiles

Aroma volatiles of mango (Mangifera indica L.) determine consumer acceptability and influence selection, whilst breeding. To assess their variety, composition and possible impact on cultivar relationships, volatile blends of 22 Indian and five non-Indian cultivars were investigated using solvent extraction and gas chromatography. Totally 84 volatiles belonging to various chemical classes were detected. Based on the cumulative occurrence of members of these classes, cultivars were grouped as monoterpene or sesquiterpene dominant. α-Pinene, β-myrcene and β-caryophyllene were found in all 27 cultivars. For ordination, common compounds with high (relative) concentration provided quantitative characters, whereas the rare and lesser ones provided qualitative (binary) characters; non-Indian cultivars separated from Indian ones but displayed close relations within their groups. In conclusion, mango flavour is dominated qualitatively as well as quantitatively by terpene hydrocarbons; ancient selection of mango cultivars is hinted to be driven by different aroma characters in different parts of the world.     

电子束辐照对芒果品质的影响

为研究电子束辐照处理对芒果品质的影响,筛选适用于芒果辐照保鲜的最佳剂量,分别采用0.5、1.0、1.5和2.0 kGy剂量电子束辐照芒果,测定室温贮存条件下辐照处理后芒果发病率、失重率以及营养指标的变化情况。结果表明:不同剂量的电子束辐照处理对芒果的硬度、可溶性固形物、抗坏血酸、总酸和还原糖等营养成分含量没有显著性影响;但0.5和1.0 kGy辐照处理能使芒果保持良好的外观品质,延缓其褐变速度,降低其腐烂率和失重率,抑制果实后熟转黄,保持水果的色泽;而1.5和2.0 kGy剂量辐照处理一定程度上加速了芒果的褐变和腐烂,降低其外观品质和色泽,尤其是2.0 kGy辐照处理组,其腐烂变质速度最快。对芒果来说,其电子束辐照保鲜处理的最佳辐照剂量为0.5~1.0 kGy。     

原味芒果干无硫加工质量关键点的确定与控制

为了确保原味芒果干无硫加工的质量,将各工序进行危害性分析后,依据各工序对产品质量(色泽、口感、外观、产品得率等)的影响程度,确定原味芒果干无硫加工过程中芒果和白糖原料选择、催熟、选果、无硫护色、浸糖、烘干6道工序为原味芒果干无硫加工质量关键控点,并就如何有效控制关键控点进行了探讨。     

Prediction of Sensory Profile of Mango Using Textural Attributes During Ripening

Mango is an important commercial fruit and is marketed based on their colour, firmness and taste. These sensory parameters vary with individual mango and person involved in testing. There is little or no information available on the instrumental estimation of these sensory attributes. The present study, therefore, was conducted to correlate sensory and instrumental textural attributes to explore the possibility of predicting them for seven major cultivars of mango influenced by harvesting dates and ripening period (10 days). In general, the textural property of peel, pulp and fruit decreased while sensory attributes increased during fruit ripening. Sensory qualities like taste, flavour and overall acceptability were significantly affected by harvesting date, cultivar and ripening period. Harvesting time and cultivars, however, did not influence the fruit appearance. Among textural attributes, peel firmness was closely associated with all the sensory parameters indicating that textural parameters could be useful to predict sensory profile of mango cultivars during their ripening. Cultivar-specific variations were observed while evaluating various equations (linear/polynomial/exponential/logarithmic/power) for correlating their textural and sensory attributes. Polynomial equation was found to be the best fit (highest coefficient of determination, R ²) for prediction of sensory quality using textural properties of majority of mango cultivars. All cultivars under study except Alphonso collected from Maharashtra showed R ² value above 0.911 which indicated potentiality of the fitted equations for the prediction of sensory attributes using textural characteristics of mango.     

微波真空冷冻干燥对芒果干制品品质特性的影响

为获得较优的芒果干燥方法,以复水性、感官为评价指标,比较微波真空冷冻干燥、热板真空冷冻干燥和热风干燥3种不同干燥方法对芒果干制品品质的影响。结果表明：真空冷冻干燥法的产品各项指标均优于热风干燥法。微波真空冷冻干燥的产品复水性最好,25℃与100℃最大复水比分别为3.363、3.674;其次为热板真空冷冻干燥,两温度条件下与微波真空冷冻干燥产品复水比相差较小;热风干燥产品复水性最差,分别为2.140、3.028。感官指标中色泽、香气和口味3方面均为：微波真空冷冻干燥＞热板真空冷冻干燥＞热风干燥。     

QUALITY CURVES FOR MANGO FRUIT (CV. TOMMY ATKINS AND PALMER) STORED AT CHILLING AND NONCHILLING TEMPERATURES

“Tommy Atkins” and “Palmer” mangoes were harvested medium‐ripe held for 7–20 days at five different temperatures and evaluated for quality attributes. The objective of this work was to obtain quality curves at chilling and nonchilling temperatures and to identify, for each temperature, which quality factors limit mango marketability. Chilling injury and increased fruit softness were the limiting quality factors for mango stored at 2 and 5C. Softening of the fruit, changes in color and development of decay were the limiting quality factors for mango stored at 12, 15 and 20C. Prediction of mango shelf life calculated from the data reported in the literature is not precise unless the characteristics of the fruit and environmental factors involved are well known. The curves obtained from quality evaluations for each temperature showed that a single quality attribute cannot be used to express loss of quality of mango over the normal physiological range of temperatures.     

Utilization of partially ripe mangoes for freezing preservation by impregnation of mango juice and sugars

Frozen mango is texturally damaged due to formation of ice crystals during freezing preservation. The objective of this investigation was to use partially ripe mango as an alternative for ripe mango. Based on its stronger structure, partially ripe mango could better withstand texture damage by ice crystals. Its flavor and color could be enhanced by impregnation of mango juice and sugars (natural flavor) into the mango matrix. This investigation found that calcium carbide incubation for two days helped prepare the mango at a partially ripe state. Vacuum infusion was more effective than natural mass diffusion in incorporation of mango juice-sugar mixture (shorter soaking time (˜10 min at 74.66 kPa) and better mango quality (texture, solid content and color sensory scores ˜7-8 in a traditional 9-point hedonic scale). After freezing (air-blast, jet-impingement and cryogenic freezing) and thawing, the juice/sugar-infused mangoes were high in sensory scores (7-8) and low in drip loss (9-12 g/100g) values. They better tolerated freezing damage than did ripe mango. This proposed method can help reduce the post-harvest losses arising from the faster spoilage of more ripe mangoes. It enhances natural flavor and taste of the partially forced ripening mangoes which normally impart only color.