Overview
Acidity regulators are chemical compounds used in the food industry to modify or stabilize the acidity (pH) of products. They serve dual purposes: enhancing flavor profiles and extending shelf life by inhibiting microbial growth. Common examples include citric acid (E330), lactic acid (E270), and phosphoric acid (E338). These additives are classified as food-grade and are subject to strict regulatory standards worldwide. The selection of an acidity regulator depends on the desired taste (e.g., tartness for beverages) and functional requirements (e.g., chelation in dairy). They are indispensable in processed foods, contributing to consistency and safety while meeting consumer expectations for taste and quality.
Physical and Chemical Properties
Acidity regulators exhibit varying physical states, from crystalline powders (e.g., citric acid) to syrupy liquids (e.g., acetic acid). Their solubility in water is typically high, facilitating uniform distribution in food matrices. Chemically, they function as weak acids or buffers, releasing hydrogen ions to lower pH or resist changes in acidity. Thermal stability varies; citric acid decomposes at 175°C, while phosphoric acid withstands higher temperatures. These properties influence processing conditions, such as pasteurization or baking. Hygroscopicity is another consideration, as some regulators (e.g., lactic acid) require moisture-controlled storage to prevent clumping or degradation.
Main Applications
In beverages like soft drinks, acidity regulators (e.g., phosphoric acid in colas) provide sharpness and balance sweetness. Dairy products use citrates to stabilize emulsions and prevent protein coagulation. Canned foods rely on these additives to inhibit botulism by maintaining low pH levels. The confectionery industry employs tartaric acid for sour candies, while baked goods use fumaric acid as a dough conditioner. Beyond taste, regulators act as preservatives in jams and sauces, reducing the need for artificial additives. Their versatility makes them essential across savory and sweet applications.
Safety and Storage
Acidity regulators approved for food use (e.g., by FDA or EFSA) are safe within specified limits. Overconsumption may cause dental erosion or gastrointestinal discomfort, necessitating dosage controls. Industrial handling requires PPE (gloves, goggles) to prevent skin or eye irritation from concentrated forms. Storage recommendations include airtight containers in cool (below 25°C), dry environments to prevent caking or hydrolysis. Bulk purchases should prioritize moisture-resistant packaging, especially for hygroscopic types like citric acid. Shelf life typically exceeds two years if stored properly.
B2B Procurement Guide
Buyers should prioritize suppliers with food-grade certifications (e.g., FSSC 22000) and batch-specific COAs (Certificates of Analysis). Key purchase criteria include purity (≥99% for most applications), particle size (for powders), and compliance with regional regulations (e.g., EU E-numbers). Volatility in raw material costs (e.g., citrus for citric acid) may affect pricing; long-term contracts can mitigate fluctuations. Sustainable sourcing is gaining traction, with bio-based lactic acid as an example. Sample testing for metal contaminants (lead, arsenic) is advised, particularly for regulators used in baby food or pharmaceuticals.
Related Manufacturers
- 主营：营养强化剂、抗氧化剂、甜味剂、食品级增稠剂、酶制剂、酸度调节剂、食品乳化剂、着色剂、抗结剂、增味剂、食用色素、粉末香精
- 主营：海藻酸钠、黄原胶、酪蛋白酸钠、卡拉胶、胍基乙酸、瓜尔胶/瓜尔豆胶、核苷酸、L-精氨酸、亚硫酸氢钠、苹果酸、柠檬酸、乳酸链球菌素、明胶、木糖、低聚果糖、苏氨酸、色氨酸、牛磺酸、山梨酸钾、L-半胱氨酸盐酸盐、β-胡萝卜素
- 主营：工业盐、尿素、轻质碳酸钠、硫酸氢钠、五水偏硅酸钠、氨水、软水盐、元明粉、无水硫酸钠、硼砂、纯碱、冰醋酸、麦芽糊精、氟硅酸钠、氨基磺酸、硫化钠、零水偏硅酸钠、三氯化铁、过硫酸钠、过碳酸钠、片碱、草酸、磷酸三钠、磷酸、优氯净
- 主营：苯酚、磷酸、甲酸、食品添加剂、正丁醇、三乙醇胺、顺酐、苯酐
- 主营：食品级冰醋酸、粮食酿造食用冰醋酸、食用冰醋酸、酸度调节剂、食品添加剂冰醋酸、食品添加剂、食品级酸度调试剂、酸味剂、食用冰乙酸添加剂、冰醋酸、冰乙酸、食用醋酸、食用冰乙酸、食品级冰乙酸、出口冰醋酸、出口食用冰醋酸、纯粮酿造冰醋酸、高纯度食用冰醋酸、99.50%冰醋酸、出口食品级冰醋酸、顺馨牌食用冰醋酸、高浓食用冰乙酸、顺馨纯粮冰乙酸、高纯度冰乙酸
- 主营：海藻酸钠、乳酸链球菌素、卡拉胶、温轮胶、黄原胶、苯丙氨酸、亮氨酸、苏氨酸、谷氨酸、蛋氨酸、牛磺酸、谷氨酰胺、半胱氨酸、酪蛋白酸钠、柑橘黄、羧甲基纤维素钠、聚丙烯酸钠、柠檬酸、氨基丁酸、胍基乙酸、定优胶、L-硒-甲基硒代半胱、干酪素
- 主营：硫酸铜、活性炭、硼砂工业、分散剂nno、分散剂水处理、工业氨水、硫酸亚铁、亚硝酸钠、低浆料粘度、硫酸铵工业、化工亚硫酸、纺织涂料造纸、硝酸钠供应商、工业无水乙醇
- 主营：丙酸钙、肉桂酸、维生素C/抗坏血酸、抗氧剂264、抗氧剂t501、抗氧剂1010、抗氧剂dltp、edta二钠、纳他霉素、抗坏血酸、双乙酸钠、聚赖氨酸、胍基乙酸、半胱氨酸盐酸盐、半胱氨酸、果胶、干酪素、苯丙氨酸、乳酸链球菌素、肉桂酸钾、色氨酸、牛磺酸、低聚木糖、酪蛋白酸钠、维生素C、vc
- 主营：甘氨酸、儿茶黑、水苏糖、除腥剂、红曲黄、可可壳、脆皮素、维纶胶、五香粉、硫酸锰、相苷酶、肌氨酸、烟酰胺、牛磺酸、褪黑素、碳酸镁、温轮胶、脯氨酸、叶绿素、冰乙酸、酸性红、淀粉钠、脂肪酶、大蒜粉、右旋糖
- 主营：食品级酸度调味剂直发、阿昔洛韦侧链、化工原料
- 主营：木糖醇、乳糖、木糖、蔗糖八乙酯 苦味剂、胍基乙酸、黄原胶、海藻酸钠、酪蛋白酸钠、酪蛋白/干酪素、甘氨酸、牛磺酸、瓜尔胶/瓜尔豆胶、果胶/苹果果胶、维生素CL-抗坏血酸、聚赖氨酸、苯丙氨酸、半胱氨酸、苯甲地那铵 苦精、甘露糖醇/甘露醇、海藻糖、山梨糖醇/山梨醇、卡拉胶、蛋氨酸
- 主营：淀粉糖、阿力甜、果冻粉、抑甜剂、增稠剂、植脂末、结冷胶、酒石酸、酪蛋白、沙蒿胶、丙酸钠、安赛蜜、烟酰胺、牛磺酸、豆腐王、塔格糖、茶多酚、乳糖醇、氨基酸、琼脂粉、乳酸锌、海藻糖、虾青素、赖氨酸、黄芪胶
- 主营：氨基磺酸、污水处理烧碱、亚氯酸钠、速凝剂、脱硝剂、脱硫剂、氨水、液碱、甲醇、乙醇、片碱、硫酸铜、EDTA二钠、AOS、硫酸锌、硫酸锰、钼酸钠、亚硫酸氢钠、硼砂、磷酸三钠、甘油、次氯酸钠
- 主营：聚丙烯酰胺、柠檬酸、硫酸亚铁、消泡剂、聚合氯化铝、醋酸钠、食用葡萄糖、锰砂滤料、果壳滤料、金刚砂、纤维球、天然鹅卵石、氯锭、海绵铁滤料、无烟煤滤料、活性氧化铝、蜂窝活性炭、石英砂、椰壳活性炭、果壳活性炭、粉状活性炭、煤质柱状活性炭、硫酸铜、氯化钙
- 主营：四乙酰核糖、双乙酰阿昔洛韦、三乙酰更昔洛韦、食品级酸度调味剂直发、N4-乙酰胞嘧啶、胞苷、腺嘌呤、吡唑胺、对羟基苯乙酮、半胱胺盐酸盐、钼酸钠、碳酸锆