本文转自【央视财经】； 今天（2月16日）是除夕 不少家庭一早就开始张罗团圆饭 一桌好菜，从挑对食材开始 猪牛羊肉，谁是"营养冠军"？ 哪些肉类不建议多吃？ 吃不完的饭菜，怎么保存才安全？ 年夜饭前，快码住 选对肉 年夜饭更健康、更美味 这顿团圆饭，不仅关乎口味，更关乎一家老小的健康。今年这样备货试试↓ 猪、牛、羊肉怎么选既好吃又健康？ 不少人认为牛肉一定比猪肉更营养，其实未必。 瘦猪肉（如里脊肉）在蛋白质和铁含量上与常见的瘦牛肉部位（如牛里脊、牛腱子等）相差甚微，且瘦 猪肉的维生素B1含量优于牛肉。对于主食精细化、常在外就餐的人来说，每天摄入50克瘦猪肉，就能 补充相当可观的维生素B1。 若不小心被虾、蟹、鱼等刺伤，应将淤血挤出，然后用清水冲洗。注意，创伤弧菌是嗜盐性弧菌，切勿 用生理盐水清洗伤口，以免加重感染。若出现疼痛、瘙痒、肿胀、腹泻或发热等症状，应立即就医。 鸡、鸭、鹅等禽肉去皮后，脂肪含量相对较低，是优质蛋白质来源，且鸡肉肉质细腻，鸭肉富含B族维 生素。 这几种肉最好少吃、不吃 加工肉 羊肉富含蛋白质和铁，建议备货时优先选择羊腿肉、羊里脊等瘦肉部位。 可优先安排鱼虾和禽肉 鱼、虾等水产品脂肪含量较 ...

Core Viewpoint - The article emphasizes the importance of proper purchasing and storage methods for traditional Chinese New Year goods to ensure food safety and quality during the festive season [1]. Group 1: Purchasing Recommendations - The recommended order for purchasing New Year goods is to buy packaged foods first, followed by fresh produce, then cooked foods, and finally frozen products [1][13]. - It is advised to avoid purchasing loose frozen meatballs due to potential contamination risks and lack of nutritional labeling [3][5]. - For frozen meatballs, it is better to choose those with complete packaging to ensure hygiene and to check nutritional content [5]. Group 2: Storage Guidelines - Avoid placing plastic bags directly into the refrigerator as it can affect food safety; non-food-grade plastic bags may contain harmful substances [7][9]. - Different types of vegetables have specific storage methods: leafy greens should be dried and stored in a breathable bag, root vegetables can be kept in a cool, dry place, and tropical fruits should not be refrigerated [11][13]. - Berries should be stored in ventilated containers with absorbent materials to prevent spoilage [11].

Core Viewpoint - The article provides a guide on how to properly store various types of vegetables and fruits during the Chinese New Year, emphasizing that different food items require specific storage methods to maintain freshness and quality [1] Group 1: Storage Guidelines for Vegetables - Leafy greens should be stored in a breathable bag after removing wilted leaves and drying with paper towels, and should not be refrigerated for more than three days to keep them crisp [1] - Root vegetables do not need refrigeration and should be kept in a cool, dry place; if refrigerated, they should be wrapped in plastic wrap to prevent moisture and sprouting [1] - Mushrooms are sensitive to moisture and should be stored in a dry environment to avoid spoilage [1] Group 2: Storage Guidelines for Fruits - Unripe fruits should be placed in breathable bags without sealing, while ripe fruits should be kept in a ventilated area without bags [1] - Tropical fruits should not be refrigerated as they may get frostbite and turn black; they should be stored in a cool, ventilated area [1] - Berries like strawberries and blueberries should be placed in perforated containers with paper towels to absorb moisture and prevent crushing [1] - Apples and pears, which can accelerate the ripening of other produce, should be stored separately or wrapped in plastic wrap [1]

Core Insights - A man in Guangdong experienced severe health issues after consuming fried rice made from refrigerated rice, leading to ICU admission due to foodborne illness caused by Bacillus cereus [2] Group 1: Foodborne Illness Overview - The illness was identified as food poisoning caused by Bacillus cereus, commonly found in starchy foods like rice and fried rice left at room temperature for extended periods [2] - Symptoms of the illness include abdominal pain, diarrhea, and respiratory difficulties, which can lead to multi-organ failure if untreated [2] Group 2: Types of Bacillus cereus Poisoning - There are two types of Bacillus cereus poisoning: 1. Vomiting type, which requires high-temperature cooking (126°C for 90 minutes) to eliminate the toxin, with symptoms appearing within 0.5 to 6 hours [3] 2. Diarrheal type, which can be eliminated by heating at 45°C for 30 minutes or 56°C for 5 minutes, with symptoms appearing within 2 to 36 hours [3] Group 3: Food Safety Recommendations - To avoid Bacillus cereus poisoning, it is advised to consume rice and other starchy foods immediately after cooking and to store them properly in the refrigerator [3] - Personal hygiene practices, such as frequent handwashing and maintaining clean kitchen utensils, are essential to prevent cross-contamination [3] Group 4: Foods to Avoid Overnight Storage - Certain foods should not be stored overnight, including: 1. Seafood, which can degrade and irritate the gastrointestinal tract [4] 2. Leafy greens, which can produce harmful nitrites if stored improperly [4] 3. Fresh soy milk, which can harbor bacteria if not consumed shortly after preparation [5] 4. Mushrooms and fungus, which can produce toxins if not stored correctly [6]

Core Viewpoint - Improper storage and consumption of leftover rice can lead to severe foodborne illnesses, specifically a condition referred to as "fried rice syndrome" caused by Bacillus cereus bacteria [1][3]. Group 1: Fried Rice Syndrome - "Fried rice syndrome" is characterized by symptoms such as abdominal pain, diarrhea, and respiratory difficulties, as experienced by a 50-year-old man in Guangdong who consumed refrigerated fried rice [2][3]. - The condition is caused by Bacillus cereus, which thrives in starchy foods like rice when left at room temperature for extended periods [3]. - There are two types of Bacillus cereus food poisoning: the vomiting type, which requires high temperatures to eliminate toxins, and the diarrhea type, which can be mitigated with lower heating temperatures [4][5]. Group 2: Prevention Measures - To avoid "fried rice syndrome," individuals should maintain personal hygiene, regularly wash hands, and keep kitchen utensils clean to prevent cross-contamination [6]. - It is advised to consume freshly prepared food and avoid overnight storage, as refrigeration does not guarantee safety [7][8]. - Specific foods that should not be consumed after being stored overnight include seafood, leafy greens, fresh soy milk, and certain fungi, as they can develop harmful substances when improperly stored [11].

Core Viewpoint - The impending arrival of Typhoon "Hagupit" is causing panic buying in Guangdong, leading to a significant depletion of essential supplies, with only chili peppers remaining on the shelves [1][3][7]. Group 1: Consumer Behavior - Consumers in Guangdong are exhibiting panic buying behavior, resulting in the near-total depletion of grocery items, with only chili peppers left unsold [1][3]. - A local resident, Ms. Wu, reported that upon visiting the supermarket, she found all vegetables sold out except for chili peppers, indicating a shift in consumer purchasing priorities [3][7]. - The trend of buying non-perishable items, such as instant noodles, has also been noted, with only spicy flavors remaining available [7]. Group 2: Preparedness and Response - Residents are taking the threat of the typhoon seriously, with many starting to stock up on supplies two days in advance of the storm's expected landfall [7]. - Despite the current calm weather, there is a sense of unease among the local population, as they anticipate the storm's impact [9].

Core Insights - The retail industry is facing unprecedented challenges, including declining foot traffic, inventory buildup, and shrinking profit margins, with 62% of retail companies experiencing stagnation in growth [1] - Identifying core products and leveraging the "Cross Ratio" (CR) is essential for retailers to achieve sales and profit breakthroughs amidst these challenges [1][2] What is Cross Ratio - Cross Ratio (CR) is a tool to identify more profitable products, combining gross margin and inventory turnover to assess product profitability and capital efficiency [2][3] - CR is calculated as: CR = Gross Margin (%) × Inventory Turnover Rate [3] Significance of Cross Ratio - A higher CR indicates greater returns on inventory investment, highlighting the comprehensive value of a product [4] How to Use Cross Ratio for Product Selection - Focus on high CR products and optimize low CR products through data-driven adjustments [5] - Steps include: 1. Replace low CR products and streamline SKUs based on defined evaluation periods and benchmarks [5][6] 2. Classify products in the evaluation list to avoid blind elimination [6] 3. Monitor and replace low CR products with high CR alternatives to maintain customer flow [7] Adjusting Profitability and Turnover Rates - Strategies to enhance low CR products include optimizing display and inventory management for low turnover, high margin items, and negotiating better procurement costs for high turnover, low margin items [8][9] Comparing CR Values Across Categories - Conduct a comprehensive CR value assessment across product categories to identify advantageous segments for resource allocation and category expansion [10][11] Application of Cross Ratio in Chain Systems - Cross Ratio can help address the challenges of store differentiation and standardization by comparing CR values across stores to identify profitability gaps [12][13] - Targeted adjustments based on CR analysis can lead to significant improvements in store performance [15] Final Value of Cross Ratio - Cross Ratio aids retailers in optimizing capital allocation, enhancing store efficiency, and reducing trial-and-error costs, ultimately leading to higher profitability [20][21][22] - The core logic is that a higher CR translates to more profit generated per unit of inventory investment [20] Conclusion - In the current retail landscape of slowing growth and rising costs, data-driven decision-making through Cross Ratio is crucial for retailers to thrive and optimize operations [23][24]

Group 1 - The article emphasizes the importance of food safety during high temperatures, particularly regarding the consumption of cut fruits and leftover meals [1][11] - Cut watermelon should ideally be consumed fresh, and if stored, it should be wrapped and refrigerated, with a maximum storage time of 48 hours to prevent bacterial growth [1][3] - Leftover food, especially certain types like leafy greens and seafood, should be avoided due to the risk of spoilage and potential health hazards [4][8] Group 2 - Leafy vegetables can lose nutrients and become unsafe if stored improperly, as they may convert nitrates into harmful nitrites [6] - High-protein seafood can produce degradation products if not consumed on the same day, potentially causing gastrointestinal discomfort [8] - Starchy foods like potatoes should be sealed and frozen if not consumed immediately, to minimize bacterial growth [10] Group 3 - Recommendations for summer eating include preparing only what can be consumed in one sitting and ensuring any leftovers are properly stored and reheated before consumption [11][13] - The article outlines a "three do's and three don'ts" approach for summer food safety, emphasizing cooking food thoroughly, separating raw and cooked items, and avoiding the consumption of raw water and unwashed produce [13]

Group 1 - The article discusses the risks associated with the so-called "smart drugs" that are often promoted to enhance academic performance, particularly during exam seasons [1][6] - "Smart drugs" include substances like methylphenidate, modafinil, and Adderall, which are controlled substances with high potential for addiction and significant side effects [3][4] - The misuse of these drugs can lead to severe mental health issues, including irritability, insomnia, and even hallucinations, and they do not actually improve intelligence [6] Group 2 - The article emphasizes the importance of nutrition for brain health, suggesting that certain foods can support cognitive function without the risks associated with "smart drugs" [7] - Six recommended foods for brain health include seafood rich in DHA, nuts high in unsaturated fatty acids, eggs containing lecithin, leafy greens, whole grains, and probiotics [8][10][12][14] - These foods provide essential nutrients that contribute to brain health and cognitive function, highlighting a natural approach to enhancing mental performance [8][10][12][14]