The global chewing gum market is expected to grow at a CAGR of 5.64% over the next five years. In terms of geography, APAC is the fastest-growing region in the market. Latin America and the Middle East are also expected to grow at a quick pace. North America will likely exhibit a slowdown in sales during the forecast period. The European Food Safety Authority (EFSA) stands behind the dental benefits of sugar-free chewing gum, leading to greater consumer interest. This has resulted in a wider customer base for chewing gum manufacturers. Chewing gum is a product that is mostly bought on impulse. Therefore, attractive packaging and the correct placement of these products, like at the checkout zones of supermarkets and hypermarkets, are also expected to drive the market during the forecast period.

Sugar substitutes are sweet food additives that taste like sugar but have significantly lower calories than sugar. Although there are many variants of natural and artificial sweeteners, the global sugar substitutes market can be divided into three major categories: HFS, HIS, and LIS. Only relatively recently have sugar substitutes become an essential part of many beverages, confectionery and baked products, dairy and frozen foods, and health care and personal care food products.

Food colors are dyes, pigments, or color lakes that are either naturally or synthetically derived. The exact color each dye or pigment depends on the concentration, pH, and nature of the food. Natural food colors are extracted from vegetables, fruits, minerals, and animals, and do not contain added chemicals.

Canned food products refer to food items that are processed, preserved, and packed into airtight metal containers. Canned food products are consumed across the world because they require less time to cook, less storage space, and have a longer shelf life than fresh food. Elderly individuals and those with busy lifestyles are major consumers of these products.

建立同时测定蓝莓果实中8 个有机酸类成分含量的高效液相色谱法，并利用该方法测定26 个不同品种蓝莓果实中的有机酸含量。结果表明，所测品种中塞拉的有机酸含量最高，达25.135 26 mg/g鲜果，最低的为克瑞顿，仅含2.368 31 mg/g鲜果。该方法简便、快速、准确，具有良好的重复性和回收率，可作为蓝莓果实中有机酸含量的测定方法。

采用正交试验设计优化龙眼核多酚的提取条件。在单因素试验的基础上，以乙醇体积分数、料液比、提取时间、提取温度为自变量，以龙眼核多酚提取量为考察指标，经过四因素三水平正交试验得出龙眼核多酚提取的最佳工艺条件：乙醇体积分数40%、料液比1∶20（g/mL）、提取温度70 ℃、提取时间90 min。在该条件下龙眼核多酚提取量为36.15 mg/g。通过对4 种树脂静态吸附及解吸性能的比较，确定D3520型树脂为龙眼核多酚分离纯化的理想树脂，洗脱剂乙醇体积分数为40%时，树脂对多酚的解吸率最高。采用傅里叶变换离子回旋共振质谱（Fourier transform ion cyclotron resonance mass spectrometry，FT-ICR-MS）对龙眼核多酚结构进行初步分析，结果表明，龙眼核多酚主要成分为以鞣花酸及其衍生物为主的小分子质量水解单宁。通过核磁共振、紫外光谱和红外光谱对FT-ICR-MS中2 种丰度很高的物质进行分析，确定其分别为鞣花酸和(S)-flavogallonic acid，后者为鞣花酸的衍生物。

分析比较新疆拜城油鸡和南京土鸡鸡皮总脂质和磷脂的含量及脂肪酸组成。用溶剂提取法分别提取2 种鸡皮的总脂质和磷脂，将提取的脂质经甲酯化后，利用气相色谱-质谱分析其脂肪酸组成。结果显示，南京土鸡鸡皮总脂质含量和磷脂含量分别为35.56%和7.71%，拜城油鸡鸡皮中总脂质含量和磷脂含量分别为42.65%和8.95%，均高于南京土鸡。南京土鸡与拜城油鸡鸡皮总脂质中各含有25 种脂肪酸，主要包含油酸、亚油酸、棕榈酸、硬脂酸、棕榈烯酸；2 种鸡鸡皮磷脂中均含有10 种脂肪酸，主要包含棕榈酸、油酸、硬脂酸和亚油酸。2 种鸡的鸡皮油脂脂肪酸的种类相同，但各脂肪酸含量有所差异；脂肪酸饱和程度比例基本相似，但南京土鸡鸡皮磷脂中不饱和脂肪酸和亚油酸含量高于拜城油鸡。

用海藻酸钠-淀粉凝胶作固定剂，将乳酸菌固定到两片核微孔膜中间制成“三明治”式传感膜，然后将其固定到玻碳电极上制成生物传感电极。通过电化学工作站检测3 种抗生素分别在不同质量浓度条件下的响应电流，结果表明：该传感器固定瑞士乳杆菌的最适量为0.05 g，此时对青霉素、链霉素、四环素的最低检测限分别为1×10－10、1×10－9、1×10－9 g/mL，检出时间为4 min，明显优于国内外对抗生素残留量的要求。而且经测定表明该电极在37 ℃的MRS培养基中至少可以稳定保存7 d，低温保藏应该可以保存更长时间，说明电极性能比较稳定。总之，固定化乳酸菌制备的生物传感器提供了一种新的定量测定抗生素的方法，其检测灵敏度高、成本低、简单、快速，不仅适用于乳制品中抗生素残留的定量化快速检测，而且可以实现对多种类型的抗生素进行检测。