牛奶豆腐研制

本文就牛奶豆腐的制作及影响因素进行了探讨。将牛奶与豆浆按适当比例混合，依照传统的豆腐制作方法，即可得到营养价值较高，色香味俱佳的牛奶豆腐。     

小米牛奶的研制

研制了一种新型牛奶饮品—小米牛奶．并对其生产工艺进行了研究。小米经炒制产生宜人香味后再磨浆，过滤，所得小米汁再与牛奶混合调配。通过正交试验优选出了小米牛奶的最佳配方。其配方为：牛奶80％；小米8％；白糖6％；稳定剂0．3％(均为质量分数)。     

低酸性果汁牛奶的研制

研究将果汁通过树脂处理,脱去部分酸和金属离子,再与牛奶混合生产低酸性果汁牛奶;探讨了果汁牛奶的生产工艺条件。     

紫薯牛奶的研制

以紫薯粉和牛奶为主要原料制作紫薯牛奶,利用感官评定作为评价方法,对牛奶、紫薯粉、白砂糖和稳定剂的用量对感官品质的影响进行了研究。结果表明,产品的最佳配比为:80%牛奶、6%紫薯粉、5%白砂糖和0.22%复配稳定剂(单硬脂酸甘油酯45%,卡拉胶9%,黄原胶9%,结冷胶37%)、8.78%水分。     

红豆牛奶的研制

以红豆和牛奶为主要原料制作红豆牛奶,利用感官评定作为评价方法,对牛奶、红豆粉、白砂糖和稳定剂的用量对感官品质的影响进行了研究.结果表明,产品的最佳配比为:80.0%牛奶、0.8%红豆粉、5.0%白砂糖和0.2%复配稳定剂(单硬脂酸甘油酯为40.0%、改性磷脂16.0%、黄原胶11.0%、结冷胶33.0%),14.0%水...     

低酸性果汁牛奶的研制

研究将果汁通过树脂处理,脱去部分酸和金属离子,再与牛奶混合生产低酸性果汁牛奶;探讨了果汁牛奶的生产工艺条件。      

巧克力牛奶的研制

重点研究了不同产地和品牌的可可粉对产品口感的影响,以及不同的稳定剂对巧克力牛奶稳定性的影响。结果表明,选用DELFI可可粉制作巧克力牛奶脂香浓郁,口感最好,其用量为1.0%和1.25%的巧克力牛奶口感纯正。但从成本角度考虑,本实验选用1.0%的可可粉用量。该产品的稳定性需采用复配稳定剂,复配稳定剂最佳组合为卡拉胶0.015%,微晶纤维素0.13%,单甘酯0.1%。     

巧克力牛奶的研制

重点研究了不同产地和品牌的可可粉对产品口感的影响,以及不同的稳定剂对巧克力牛奶稳定性的影响。结果表明,选用DELFI可可粉制作巧克力牛奶脂香浓郁,口感最好,其用量为1.0%和1.25%的巧克力牛奶口感纯正。但从成本角度考虑,本实验选用1.0%的可可粉用量。该产品的稳定性需采用复配稳定剂,复配稳定剂最佳组合为卡拉胶0.015%,微晶纤维素0.13%,单甘酯0.1%。      

奶啤的研制

以牛奶、麦芽和酒花为主要原料,通过二次生物发酵研制出具有奶香和啤酒风味的奶啤饮料。通过实验确定奶啤的最佳配方及生产工艺流程并对奶啤的稳定性进行探讨,从而研制出即有啤酒的低酒精度、泡沫丰富和适度的二氧化碳,又具有酸乳饮料的酸甜可口、营养全面的奶啤饮料。     

含24种乳抗体免疫乳的制备

以24株人肠道病原菌（包括病原性大肠杆菌12株、沙门氏菌8株、志贺氏菌3株、小肠结肠炎耶尔森氏菌1株）作为抗原，对乳牛进行系统免疫，免疫乳与非免疫乳乳中IgG含量无显著差异。系统免疫并不增加乳中IgG的含量，但IgG的抗体特异性大大增强，所得的免疫初乳中乳抗体对24种不同病原菌的凝集价为2^8-2^12，为普通初乳中乳抗体凝集价的32－256倍；免疫常乳中乳抗体对24种不同病原菌的凝集价为2^5-2^8，为普通乳中乳抗体凝集价的8－128倍。     

低乳糖牛奶的研制

本文主要研究探讨了低乳糖牛奶产品的配方组成及其生产工艺条件等。实验研究结果表明,该产 品具有营养丰富、口味香甜纯正以及稳定性能良好和无褐变等特点,其乳糖的水解率高达70％以上。     

食品自发热剂产氢检测方法的建立

目的建立一种通用、快捷测定食品自发热剂产氢量的方法,并对广泛应用的铝系和镁铁系自发热剂的产氢特性进行测定。方法通过单因素实验和正交实验进行检测条件的优化,并利用该方法对10种市售食品自发热剂的产氢特性进行检测。结果优化后的检测条件为:样品质量0.5 g,料液量比1:5(m/m),反应时间20～30 min。在室温20℃条件下,不同类型的发热剂样品产氢量差异显著。镁铁系自发热剂产氢量为539.95～567.06 mL/g,铝系自发热剂产氢量为225.32～510.95 mL/g。结论本文建立的检测方法,预期可以为食品自发热剂品质评价的定量分析提供技术支撑,并为食品自发热剂的安全合理使用提供技术保障。     

无糖布丁牛奶的研制开发

无糖布丁牛奶是以新鲜牛乳为主要原料，通过添加木糖醇、卡拉胶、天然玉米淀粉以及一些相应的风味料（如咖啡、可可粉等），研制成的一种营养丰富、风味独特的新型低热量乳制品。本文通过L9（34）正交试验，得到了合理、可行的产品配方、生产工艺和产品质量控制指标。试验结果表明：鲜牛奶添加量为90％。天然玉米淀粉添加量为5％，木糖醇添加量为10％，卡拉胶添加量为0．2％时布丁牛奶的风味、口感等各项指标最佳。     

果汁乳饮料的研制

研究了桔子、菠萝、草莓三种果汁乳饮料的生产工艺,制定了产品标准     

Effect of different colored filters on photooxidation in pasteurized milk

The effect of different colored filters and atmospheres on photooxidation and quality in milk was studied. Pasteurized bovine milk (3.9% fat) was packed in 2 different atmospheres (air and N₂) and exposed to light for 20 h at 4°C under 8 transparent filters with different light transmission properties. The following transparent, noncolored, and colored filters based on polyethylene terephthalate (PET) were used: noncolored (PET), noncolored with 2 different UV-block regions, yellow, green, amber, orange, and red. Control samples were stored in darkness and in a carton. Sensory evaluation showed off flavors significantly increased in milk stored under all filters compared with the control samples. Variation in atmosphere resulted in significant differences in formation of rancid flavor in milk stored under different filters. Milk samples stored in N₂ underwent the most sensory deterioration under orange and red filters, whereas milk samples stored in air were most deteriorated under noncolored filters. According to the oxidation compounds measured by gas chromatography, milk samples stored under noncolored and orange filters were highly oxidized, whereas red, green, and amber filters offered better protection against photooxidation. Fluorescence spectroscopy was used to examine the degradation of photosensitizers (riboflavin, protoporphyrin, and chlorophyllic compounds) in the milk samples. Degradation of protoporphyrin and chlorophyllic compounds in N₂ correlated well with sensory properties related to photooxidation (R² = 0.75-0.95). The study indicates that protoporphyrin and chlorophyllic compounds were effective photosensitizers in milk. To avoid photooxidation in milk, it is therefore important to protect it against light from the UV spectrum as well as light from the entire visible region.     

低乳糖学生营养奶的研制

对低乳糖学生营养奶的配方组成及其生产工艺条件等进行了研究，同时探讨了铁锌钙添加剂及其稳定剂等对产品稳定性能的影响。     

Storage stability of coconut milk powder

Spray-dried coconut milk powder prepared with additions of skim milk and dextrin was stored in packages for 6 months at room temperature (30°C and 80% RH). The packaging materials used were aluminum laminate (vacuum and air packed) and polypropylene. The sorption isotherm of the powder showed that the monolayer of water molecules was complete when the relative humidity was 27% which corresponded to a moisture content of 5%. Measurements of water activity, moisture content, peroxide value and solubility index indicated that lipid oxidation is the limiting factor in the stability of the powder. Its maximum shelf-life was 4 months when air or vacuum packaged in aluminum laminates and 1 1/2 months in polypropylene.     

小米奶饮料的研制

把我国北方的小米浸提液与牛乳相结合研制出一种新型的奶饮料，通过实验解决了由于淀粉引起的沉淀。确保稳定性，并确定了加工工艺和技术参数，使其成为具有我国传统特色的，营养价值很高的饮用佳品。