Praktikum Benzena dan Polimer (Adinda Rahma Putri - XII IPA D/02)

Summary

In this experiment, Adinda Rachma Putri demonstrates the use of sodium benzoate, a common food preservative, to maintain the color of carrot juice. After preparing fresh carrot juice, two samples were created: one with sodium benzoate and one without. Over the course of several days in the refrigerator, the juice without sodium benzoate darkened, while the juice with sodium benzoate retained its light orange color. This simple experiment illustrates the effectiveness of sodium benzoate in preventing oxidation and preserving the visual quality of food and beverages.

Takeaways

• 😀 The experiment demonstrates the effect of sodium benzoate as a preservative in carrot juice.
• 🍊 The procedure involves preparing carrot juice by blending and straining fresh carrots.
• 🧪 One sample of carrot juice is treated with sodium benzoate, while the other remains untreated for comparison.
• 🔬 The juice with sodium benzoate did not undergo any noticeable color change.
• 🌿 The untreated juice changed from light orange to dark orange over time.
• 💧 Sodium benzoate is a salt derived from benzoic acid, commonly used as a food and beverage preservative.
• 🍹 The goal of the experiment was to observe how sodium benzoate affects the preservation of carrot juice color.
• ❄️ The carrot juice samples were refrigerated for several days to observe any changes.
• 🧃 The color change in the untreated juice indicates spoilage or oxidation, which sodium benzoate prevents.
• 🔑 The conclusion of the experiment highlights the preservative function of sodium benzoate in maintaining color and freshness in the juice.

Q & A

What is the main topic of the video script?

The main topic of the video script is a simple experiment demonstrating the effect of sodium benzoate on carrot juice.

What is sodium benzoate, and how is it related to benzoic acid?

Sodium benzoate is the sodium salt of benzoic acid, which is derived from benzoic acid, a compound commonly used as a food preservative.

What is the purpose of the experiment in the video?

The purpose of the experiment is to observe the effect of sodium benzoate on carrot juice, particularly its ability to preserve the juice and prevent color change over time.

How is the carrot juice prepared in the experiment?

Carrot juice is prepared by cutting cleaned carrots into pieces, blending them, and then straining the mixture to separate the juice.

Why is sodium benzoate added to only one glass of carrot juice?

Sodium benzoate is added to only one glass of carrot juice to compare the preservation effect against the juice that doesn't contain the preservative.

What was the visual outcome after placing the carrot juice in the refrigerator?

The carrot juice without sodium benzoate changed color from light orange to dark orange, while the juice with sodium benzoate retained its light orange color.

What can be inferred from the results of the experiment?

The results suggest that sodium benzoate acts as a preservative, preventing the carrot juice from undergoing color changes, which might indicate spoilage or oxidation.

What is the significance of the color change in the carrot juice?

The color change in the carrot juice without sodium benzoate suggests that the juice is undergoing some form of degradation, possibly due to oxidation or microbial growth.

What does the experiment demonstrate about the function of sodium benzoate?

The experiment demonstrates that sodium benzoate helps to preserve the juice, keeping it looking fresh and preventing visual changes that could indicate spoilage.

Why is it important to label the glasses during the experiment?

Labeling the glasses ensures that the correct additives (sodium benzoate) are placed in the right glass, avoiding any confusion and ensuring accurate results.