瓶装椰子汁饮料生产工艺研究

以浓缩椰浆为原料，通过添加高效乳化剂及稳定剂，采用高压均质、胶体磨及高压水灭菌等工艺处理生产椰子汁饮料，解决了瓶装椰子汁饮料生产易出现油水分离、蛋白质变性及灭菌处理时产生爆瓶、跳盖等问题。     

椰子汁乳化机理及工艺条件选择

本文通过对椰子汁乳化机理的分析,优选出有效乳化、脂肪球微粒化及反絮凝工艺条件,有效地提高了椰子汁的稳定性,延长了产品货架期。     

椰子汁乳化机理及工艺条件选择

本文通过对椰子汁乳化机理的分析，优选出有效乳化、脂肪球球微粒及反絮凝工艺条件，有效地提高了椰子汁的稳定性，延长了产品货架期。     

荸荠椰子汁复合饮料的研制

以荸荠汁和椰子汁为主要原料研制饮料,对乳化剂用量、羧甲基纤维素钠用量、荸荠汁用量等主要因素进行了研究,通过响应面分析确定了荸荠椰子汁饮料的配方。结果表明,复配乳化剂的最佳亲水亲油平衡值为7。荸荠椰子汁的最优配方为乳化剂用量0.3%、CMC-Na用量2.0%、荸荠汁用量3.0%,所得产品感官评分为8.8分,能达到最佳的稳定性、色泽与风味。     

浓缩椰子汁的研制

引言椰子汁是热带植物蛋白饮料，据《本草纲目》记载，椰子汁能止血，治霍乱，疗梅毒，祛署解渴，并对充血性心力裹竭和水肿的治疗有一定的辅助作用，因此颇具开发前途。本研究对“超浓缩椰子汁”生产中原料的处理，稳定剂的选择等问题进行了研究。1．材料与方法1．回材料1．回     

HACCP体系在椰子汁饮料加工中的应用

依据HACCP体系的原理,对椰子汁饮料加工的各个工艺步骤进行危害分析,确定椰子原料选择、灌装压盖和杀菌步骤是加工过程的关键控制点.通过建立关键限值和实施监控程序,从而达到对椰子汁产品质量安全的有效控制.     

超高压加工对天然椰子汁品质的影响

采用200～600MPa压力对天然椰子汁处理10min,研究其理化性质、营养品质、抗氧化活性及感官品质的变化情况。结果表明：经高压处理后椰子汁的可溶性固形物、pH值、总糖、总酸及总酚含量与空白样相比无显著差异(P＞0.05);VC含量减少较显著,保存率为87.9%～97.6%;氨基酸在500、600MPa处理后含量显著增加(P＜0.05);抗氧化活性在400MPa处理后显著降低,600MPa处理后显著增加(P＜0.05)。感官评定结果表明：400MPa超高压处理10min的椰子汁与椰子原汁相比无明显差异,因此,采用超高压处理能较好地保持天然椰子汁的风味和营养品质。     

天然椰子汁变质的分析及解决办法

天然椰子汁变质的分析及解决办法张日生广东喜乐食品有限公司椰子风味独特、香味恰人，含有丰富的蛋白质及多种氨基酸、脂肪、碳水化合物、多种维生素及微量元素。近年来，海南省和广东省不少饮料厂以新鲜椰子肉榨汁或用罐头椰浆为主要原料，制成天然椰子汁，外观为均匀乳...     

新版杏仁露、椰子汁和复原椰子汁行业标准正式发布实施

2006年12月17日，国家发展和改革委员会2006年第90号公告批准发布了一批新的行业标准：其中，由中国饮料工业协会技术工作委员会负责组织并参与修订起草的两项标准《植物蛋白饮料椰子汁及复原椰子汁》和《杏仁露》位列其中，标准号分别为QB/T2300—2006、QB/T2438—2006，标准实施日期为2007年8月1日。     

气相色谱法测定椰子汁或复原椰子汁中5种香料

目的 建立气相色谱法检测椰子汁或复原椰子汁中乙基麦芽酚、香兰素、甲基香兰素、乙基香兰素和椰子醛的分析方法。方法 取适量的椰子汁或复原椰子汁样品, 使用硅藻土固相萃取柱净化提纯, 使用乙酸乙酯作为洗脱剂洗脱, 气相色谱法检测, 外标法定量。结果 乙基麦芽酚在5~100 μg/mL范围内有较好的线性关系, 检出限为2 mg/kg, 定量限为6 mg/kg, 回收率为88.4%~90.6%, 相对标准偏差为1.8%~5.2%; 香兰素、甲基香兰素和乙基香兰素在2~100 μg/mL范围内有较好的线性关系, 检出限为1 mg/kg, 定量限为3 mg/kg, 回收率为80.9%~90.7%, 相对标准偏差为1.8%~5.2%; 椰子醛在1~100 μg/mL范围内有较好的线性关系, 检出限为0.5 mg/kg, 定量限为1.5 mg/kg, 回收率为86.5%~99.7%, 相对标准偏差为1.8%~5.2%。结论 本方法操作简单, 快速灵敏, 稳定性好, 可作为椰子汁或复原椰子汁中乙基麦芽酚、香兰素、甲基香兰素、乙基香兰素和椰子醛的定量和定性检测方法。     

姜汁护色浸提研究与姜汁保健饮料研制

探讨了姜汁热浸提护色工艺,实验结果表明生姜与水按1∶3质量比混合、以0.5%柠檬酸护色、在90℃下浸提5min时所得姜汁外观与风味最佳。还研究了姜汁与椰汁的复配,开发出一种口感与营养俱佳的姜汁保健饮料,其工艺与配方为：姜汁稀释4倍、姜汁与椰汁复配比例1∶2、白砂糖3%、pH6.8、黄原胶0.07%。     

基于GC-MS法的椰子水及其饮料的风味成分分析

为了对不同成熟度椰子(椰青、嫩椰子、成熟椰子)的椰汁及椰子水饮料中挥发性风味物质组分和含量进行分析,采用蒸馏萃取装置提取样品中的挥发性成分,并用气相色谱-质谱(GC-MS)联用分析技术进行分离鉴定。结果表明,共检测出67种香气成分,分为7大类化合物,包括酯类32种,有机酸11种,醇类7种,醛类3种,酮类3种,酚类4种,其他类7种。在检出的香气物质中,确定主体风味组分主要是醇类、酯类和酸类3类物质,相同的挥发性成分是2,3-丁二醇。不同样品中,这些微量香气成分的种类含量有较大差别,成熟椰子原汁中风味物质的种类和含量较多。因此,椰子水原汁的挥发性成分直接影响椰子水饮料的感官质量。本试验研究为椰子水及其饮料感官品质的深入研究提供了一定的理论依据。     

含果肉颗粒饮品超高温UHT灭菌技术

众所周知含果肉颗粒饮品,例如含椰果椰汁、菠萝块果汁、芦荟果肉果汁、粒粒橙果汁等,具有较高的营养价值和独特的口感风味,是东南亚市场的热销饮品,在国内也广为消费者接受。下面就含果肉颗粒饮品生产线中,处于核心工艺位置的灭菌处理环节,采用超高温UHT灭菌技术,在设计研发过程中所遇到的难点问题的攻克和取得的突破性成果进行解析,并结合当下颗粒饮品的特性和项目经验进行讨论。     

DEVELOPMENT OF A BLENDED NONALCOHOLIC BEVERAGE COMPOSED OF COCONUT WATER AND CASHEW APPLE JUICE CONTAINING CAFFEINE

ABSTRACT

In this work, the stability of a blended beverage composed by coconut water and clarified cashew apple juice (“cajuina”) is presented. The physicochemical, microbiological and sensory stability of a blended nonalcoholic beverage composed of coconut water and cajuina (80:20 v/v) were evaluated during 6 months. The results showed that the beverage presented good stability in all analyzed parameters except for vitamin C, which presented a loss of about 80% of the initial content. The beverage color also presented changes during the storage time. Despite these alterations, the product acceptance during the storage period did not show any rejection.

PRACTICAL APPLICATIONS

The development of blended beverages is a good way of improving the nutritional quality of traditional products. By mixing two or more kinds of fruits, a product with more vitamins and minerals and with different sensory and flavor characteristics when compared to the raw materials is obtained. In the present work, coconut water and cashew apple juice were mixed to obtain a different product combining the nutritional components from both fruits. The blended beverage combines the high vitamin C content of the cashew apple juice with the high mineral level of the coconut water. Caffeine was also added conferring stimulating properties to the product. The product acceptance was evaluated by sensory analysis and presented good acceptance until 6 months of storage at room temperature, presenting the required characteristics for a commercial product.

     

基于近红外光谱技术快速检测椰汁品质

本研究应用近红外光谱技术结合主成分分析法(PCA)对3个不同品种的椰子,3个不同品牌成品椰子饮料及椰子粉进行定性分析。结果表明,对椰子3种不同形式的加工产品(椰子原汁、椰子饮料、椰子粉)进行定性分析的准确判别率均达到100%。采用近红外光谱技术结合偏最小二乘法(PLS)对椰汁饮料中原汁含量进行定量分析。为保证所建模型的稳健性、准确性,消除干扰,采用6种不同的预处理方法对近红外光谱技术进行优化,结果表明经过中心化预处理可得最佳模型,其R_p2、RMSEP、R_c2、RMSEC分别为0.9942、0.0435、0.9932、0.0519。本研究表明近红外光谱技术可为市售椰汁及椰子加工制品品质的快速、无损检测提供一种新思路。     

Encapsulated probiotic spores as a fortification strategy for development of novel functional beverages

The potential of polysaccharide matrix for encapsulation and delivery of probiotic spores of B. coagulans was evaluated for the first time in this study. Different concentrations of gellan and κ-carrageenan were explored for fabrication of hydrogel beads, which were then used to encapsulate probiotic spores. The study indicated that these beads exhibited minimal leaching under acidic conditions However, a sustainable release pattern was observed at neutral and alkaline pH. It was also found that leaching of spores followed a similar pattern when added to commercially available fruit juice and coconut water. In vitro digestion studies revealed that these beads prevented leaching and maintained the viability of spores under gastric condition, while promoted its release in intestinal phase. It was noteworthy that under ambient conditions leaching of 30% is observed until 24 h, however, ~100% of the encapsulated spores were released in simulated intestinal phase. Moreover, it was inferred from the accelerated spoilage studies that fruit juice and coconut water fortified with spore-loaded hydrogel beads could remain stable for at least three weeks. This comprehensive microbiological study could pave the way for developing novel functional beverages.     

椰子汁稳定性的研究与分析

从椰子汁生产的实际出发，优化产品配方，注重原料的选择及工艺条件的选择，并进行精心的调香，最终的产品外观和口感俱佳。