Milk Magic – Dairy Processing & Food Technology

1. Harmful Bacteria in Milk (हानिकारक बैक्टीरिया जो दूध में हो सकते हैं) Bacteria Name (बैक्टीरिया का नाम) Effects on Human Health (स्वास्थ्य पर प्रभाव) Source (स्रोत) E. coli (ई. कोलाई) Causes diarrhea, stomach cramps, vomiting. (डायरिया, पेट दर्द, उल्टी) Contaminated water, feces (दूषित पानी, मल) Salmonella (साल्मोनेला) Food poisoning, fever, nausea. (फूड पॉइजनिंग, बुखार, मतली) Infected cattle, unclean equipment (संक्रमित पशु, गंदे उपकरण) Listeria monocytogenes (लिस्टेरिया मोनोसाइटोजेनेस) Dangerous for pregnant women, newborns. (गर्भवती महिलाओं और नवजात शिशुओं के लिए खतरनाक) Soil, water, raw milk (मिट्टी, पानी, कच्चा दूध) Brucella (ब्रुसेला) Causes brucellosis: fever, joint pain. (ब्रुसेलोसिस, बुखार, जोड़ों में दर्द) Infected cows and goats (संक्रमित गाय और बकरियाँ) Mycobacterium tuberculosis (माइकोबैक्टीरियम ट्यूबरकुलोसिस) Causes tuberculosis (टीबी का कारण बनता है) Infected cattle (संक्रमित पशु) Campylobacter (कैंपिलोबैक्टर) Severe diarrhea, fever, abdominal pain. (गंभीर डायरिया, बु...

  A Milk Cream Separator consists of several key parts, each playing a crucial role in separating cream from milk. Here are the main parts along with their descriptions: Main Parts of a Milk Cream Separator: Bowl (Drum) – The central component where milk is separated into cream and skim milk. Discs (Conical Plates) – Stacked inside the bowl, these discs help separate milk by centrifugal force. Milk Inlet (Feeding Tank) – The container where raw milk is poured. Cream Outlet – The nozzle or spout from which the separated cream flows out. Skim Milk Outlet – The nozzle for the remaining skimmed milk. Shaft and Bearings – Supports and rotates the bowl at high speed. Motor or Hand Crank – Provides power to spin the separator. Float Regulator – Controls the milk flow into the separator. Base or Stand – The foundation of the separator, ensuring stability. Sludge Chamber – Collects impurities and sediment. मिल्क क्रीम सेपरेटर के मुख्य भाग और उनके नाम  कटोरा (ड्रम) – यह मुख्...

1. Mixing: Thorough Agitation: Before sampling, ensure the bulk tank's contents are thoroughly mixed to achieve homogeneity. This can be done by agitating the milk for about 5 minutes. 2. Sampling: Use of Clean Equipment: Always use clean, sanitized dippers or sterile syringes to collect milk samples. Sampling Location: Collect samples from the top of the bulk tank, avoiding the outlet, as milk from the outlet may be contaminated. Sample Volume: Fill the sample container halfway to allow for expansion during freezing. 3. Handling: Immediate Cooling: Place samples on ice or in a refrigerator immediately after collection. If testing cannot be performed within 24 hours, freeze the samples. Labeling: Clearly label each sample with relevant information, including date, time, and source, to ensure traceability.  1. मिश्रण: पूर्ण मिलाना: नमूना लेने से पहले, बल्क टैंक की सामग्री को अच्छी तरह से मिलाएं ताकि दूध समान हो जाए। इसके लिए लगभग 5 मिनट तक दूध को हिलाएं। 2. नमूना लेना: साफ उप...

 A cream separator is a device used to separate cream from whole milk, utilizing the principle of centrifugal force. This process is based on the difference in density between cream and skim milk. Working Principle: Centrifugation: Whole milk is introduced into a rapidly spinning bowl containing a series of conical discs. As the bowl rotates at high speeds, centrifugal force acts on the milk. Separation: Due to the density difference, the heavier skim milk is forced outward toward the periphery of the bowl, while the lighter cream moves inward toward the center. Collection: The separated cream and skim milk are then collected through separate outlets, allowing for efficient extraction of cream from the milk क्रीम सेपरेटर का कार्य: क्रीम सेपरेटर एक उपकरण है जो दूध से क्रीम को अलग करने के लिए सेंट्रीफ्यूगल बल का उपयोग करता है। यह प्रक्रिया क्रीम और स्किम्ड दूध के घनत्व में अंतर पर आधारित है। कार्य सिद्धांत: सेंट्रीफ्यूगेशन: संपूर्ण दूध को एक तेजी से घूमने वाले बाउल में डाला जाता ...

  Raw Milk Testing  Raw milk testing is essential to ensure the milk's quality, safety, and suitability for further processing. The following tests are commonly performed: 1. Organoleptic Test (Sensory Test) Checks the smell, color, and textu re of the milk to detect spoilage or contamination. 2. Clot-on-Boiling (COB) Test A small amount of milk is heated to 100°C ; if clots form, the milk is acidic and unsuitable for processing. 3. Alcohol Test A 68% alcohol solution is mixed with milk. If the milk curdles, it indicates poor stability and microbial activity. 4. pH Test Measures the acidity level of the milk. Fresh milk has a pH of 6.6–6.8 . A lower pH indicates spoilage. 5. Lactometer Test (Specific Gravity Test) Determines if the milk is adulterated with water . A lactometer reading between 1.026 to 1.032 is considered pure. 6. Fat Content Test The Gerber method or butyrometer is used to measure the fat percentage in milk. 7. Solid-Not-Fat (SNF) Test Measures the non-f...

  Working of Milk Pasteurizer  A milk pasteurizer is a machine used to heat milk to a specific temperature for a set period to kill harmful bacteria while preserving its nutritional value. The process includes the following steps: Milk Intake & Preheating : Raw milk is collected and preheated using a heat exchanger. Heating Stage : The milk is heated to a required temperature (usually 63°C for 30 minutes in batch pasteurization or 72°C for 15 seconds in HTST pasteurization). Holding Stage : The milk is maintained at this temperature to ensure bacteria are destroyed. Cooling Stage : The milk is rapidly cooled to about 4°C to prevent further bacterial growth. Storage & Packaging : The pasteurized milk is stored in clean, sterilized containers and packaged for distribution. This process ensures that milk remains safe for consumption while retaining its natural taste and nutrients. दूध पाश्चुरीकरण मशीन का कार्य दूध पाश्चुरीकरण मशीन वह उपकरण है जो दूध को एक निश्चित ताप...

  Milk Pasteurization   Milk pasteurization is the process of heating milk to a specific temperature for a set period to kill harmful bacteria without significantly affecting its nutritional value or taste. This process helps extend shelf life and ensures milk is safe for consumption. There are different methods of pasteurization, such as: Low-Temperature Long Time (LTLT) – Heating at 63°C (145°F) for 30 minutes. High-Temperature Short Time (HTST) – Heating at 72°C (161°F) for 15 seconds. Ultra-High Temperature (UHT) – Heating at 135°C (275°F) for 2-5 seconds. दूध पाश्चराइजेशन दूध पाश्चराइजेशन वह प्रक्रिया है जिसमें दूध को एक निश्चित तापमान पर एक निश्चित समय तक गर्म किया जाता है ताकि हानिकारक बैक्टीरिया नष्ट हो जाएं, लेकिन उसके पोषण मूल्य या स्वाद पर अधिक प्रभाव न पड़े। यह प्रक्रिया दूध की शेल्फ लाइफ बढ़ाने और इसे सुरक्षित बनाने में मदद करती है। पाश्चराइजेशन के विभिन्न तरीके हैं: निम्न तापमान दीर्घकालिक विधि (LTLT) – 63°C (145°F) पर 30 मिनट तक गर्म करना। उच्च तापमान अल्पक...